E-Class Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART I+++


The Mercedes-Benz E-Class is a range of executive cars manufactured by Mercedes-Benz in various engine and body configurations. Produced since September 1953, the E-Class falls as a midrange in the Mercedes line-up, and has been marketed worldwide across five generations.

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Stuttgart, Germany, Aug 01, 2008

Birth of the E-Class: rooted in tradition

* Eight generations of technical innovations and standard-setting design since 1947

* The intermediate series from Mercedes-Benz is an integral part of brand history

* In the eyes of many customers the epitome of the Mercedes-Benz


The history of the Mercedes-Benz intermediate class can be traced back in an unbroken line to 1947. That was the year in which the model 170 V, originally introduced in 1936, returned to production as the first post-war car built by Mercedes-Benz. But ever since the turn of the twentieth century, cars positioned beneath the luxury class, but above the small car segment, were an integral part of the model portfolios of Mercedes-Benz, as well as of the original brands, Mercedes and Benz. The very first Mercedes vehicles, which came onto the market in 1901 and with their numerous innovations laid the foundations of the modern automobile, were offered as several models addressing different customer types – including those who today would opt for a car of the upper mid-size category. In the following years the product range underwent greater differentiation. In 1914, before the start of the First World War, for example, the Mercedes model range comprised ten car models of which no fewer than four could be described as E-Class predecessors. The model range was restructured following the merger of Daimler Motoren Gesellschaft and Benz & Cie. in 1926. The first car models of the new Mercedes-Benz brand in 1926 included the 8/38 hp. Like the more advanced 1928 models, the Stuttgart 200 and Stuttgart 260, it can certainly be considered a forerunner of the E-Class. The same can be said of models that followed in the 1930s, the 200 (1933) and 230 (1936) and the diesel variant 260 D (1936), which was also the world's first passenger car to feature a diesel drive. So the brand can look back on more than 100 years of experience in the upper mid-size category. Since 1993 the intermediate series of Mercedes-Benz has been called the E-Class.

After the fresh start in 1947 with the 170 V, in 1953 the 180 (W 120) with a self-supporting, three-box body design set new technical and formal trends. The four-cylinder versions of the "tailfin" 110 series followed in 1961. Seven years later, the "Stroke 8" (115/114 series) spelled a genuine and extremely constructive revolution in automobile design. Its success was even surpassed by the W 123 that followed in 1976. A great variety of body variants was demonstrated by the first E-Class of the 124 series (1984 to 1995). A twin-headlamp face and innovative technology were hallmarks of the 210 series that appeared in 1995. And the current E-Class, the 211 series, was launched on the market in 2002.

Eight generations of technical innovation and standard-setting design – this is what has gone to make the Mercedes-Benz E-Class. No other class from the Stuttgart carmaker in the past 60 years has offered such a variety of body types: saloon, station wagon, coupe, cabriolet, as well as special builds such as chassis and long-wheelbase saloons.


Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART I








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Stuttgart, Germany, Aug 01, 2008

Technical highlights of the E-Class and its predecessors


136 and 191 series (1946 to 1955)

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Saloon (from 1947) with all-steel body

120 and 121 series (1953 to 1962)

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Three-box body design cuts air resistance and fuel consumption
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First Mercedes-Benz passenger car to feature self-supporting body design
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Rear single-joint swing axle

110 series (1961 to 1968)

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Dual-circuit brake system with brake booster and front disc brakes from 1963
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Safety passenger cell with crumple zones in front and rear ends

115 and 114 series (1968 to 1976)

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Diagonal swing axle: rear axle with semi-trailing arm, auxiliary rubber springs and torsion bar stabiliser as standard
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From 1973 on ribbed tail lights to reduce dirt accumulation
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The 240 D 3.0 becomes the first production car to feature a five-cylinder diesel engine

123 series (1975 to 1985)

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Double-wishbone front suspension with zero scrub radius
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Safety steering column with corrugated tube based on design by Béla Barényi
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Station wagon with automatic hydropneumatic level control
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300 TD Turbodiesel (1980) first car on the German market to feature turbocharged diesel engine
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Experiments with alternative drive systems: hydrogen, electric motor, liquefied gas

124 series (1984 to 1996)

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Single-arm eccentric-sweep windscreen wiper with largest swept area of any car in the world
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Shock absorber strut independent front suspension with anti-dive control; multi-link independent rear suspension
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Automatically engaging 4MATIC four-wheel drive

210 series (1995 to 2003)

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Electronic Traction System (ETS)
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Direct-injection diesel engine, turbocharger and intercooler in the E 290 Turbodiesel
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1997: new-generation 4MATIC as permanent all-wheel drive with ETS
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1998: diesel injection engines featuring common rail technology in the E-Class

211 series (since 2002)

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Four-link front suspension; multi-link independent rear suspension mostly made of aluminium
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Electrohydraulically controlled Sensotronic Brake Control (SBC™) system as standard
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Adaptive front airbags and two-stage belt force limiter featuring automatic front passenger weight classification
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Four-cylinder engine with two balancer shafts in the E 220 CDI
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TWINPULSE system for mechanical supercharging in the E 200


Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART II






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Stuttgart, Germany, Aug 01, 2008

A brief E-Class model history


Mercedes-Benz 136 and 191 series (1946 to 1955)

The 170 V (136 series), built from 1947 onwards, was the first passenger car model built by Mercedes-Benz after the end of the Second World War. Of course, production in Untertürkheim had already restarted in 1946 with commercial vehicles, ambulances and delivery vans on the same chassis. The 170 V, the first vehicle of the modern Mercedes-Benz intermediate class, was largely based on the pre-war model of the same name, but had an all-steel body.

In the years to come, the 170 V became the backbone of the Mercedes-Benz passenger car range: from the saloon version with 1.7-litre petrol engine, in 1949 the engineers derived the L 170 D diesel model and the prestigious 170 S Saloon.
Comfort and performance of these models were greatly improved as a result of continuous refinement. As the last stage in the development of the 170 family, Mercedes-Benz introduced the 170 S-V and 170 S-D in 1953. The final few 170 S-D models rolled off the assembly line in September 1955.

136 and 191 series chassis frequently served as the basis for special bodies. Mercedes-Benz and various firms of coachbuilders developed, for example, ambulances, panel vans and pickup trucks, as well as versions such as the "Open Tourer Police" (OTP).

Mercedes-Benz 120 and 121 series (1953 to 1962)

In August 1953 Mercedes-Benz launched the 180 model from the 120 series. This saloon with its modern three-box design was the first Mercedes-Benz car to feature a unitary construction, self-supporting body. The diesel variant 180 D followed in 1954. A third model, the Mercedes-Benz 190 (W 121), was added to the range in 1956; finally, the 190 D made its debut in 1958.

The vehicle’s engineering was a fitting match for the innovative exterior of the so-called “Ponton” Mercedes. The front wheels were suspended from a subframe, for example, and in 1955 Mercedes-Benz improved the handling characteristics of the rear axle by introducing the single-joint swing axle. The various models were given improved appointments in 1957 and 1959.

With the advent of the unitary body construction, the one-body-for-all system recognisable in the 170 family was now applied consistently throughout the intermediate and luxury class: the luxury models of 180 and 128 series were distinguished from the four-cylinder models mainly by their six-cylinder engines, longer wheelbase and extended front end.

To this day the debut of the Mercedes-Benz 180 has had a marked influence on the language used to report on new cars in Germany: in 1952 the magazine auto motor and sport published a first picture of a prototype together with a parody of Goethe's Erlkönig ballad. Since then, Erlkönig has remained the name Germans apply to a camouflaged prototype or mystery model.

Mercedes-Benz 110 series (1961 to 1968)

In 1961 Mercedes-Benz introduced the "tailfin" models from the 110 series. The first available models were the 190 and 190 D saloons. In 1965 the 200 and 200 D models followed with improved engineering and appointments. That same year the 230 made its premiere, the first upper mid-range series vehicle from Mercedes-Benz to feature a six-cylinder engine.

For the 110 series the developers fell back on the body of the luxury saloons (W 111). From windscreen to boot, the 190 and 190 D had the same bodies as the luxury models, the Mercedes-Benz 220, 220 S and 220 SE. The only features that distinguished the two variants were the front end and the wheelbase. But the era of the "standard body" came to an end in 1965 with the arrival of the new W 108 luxury car series.
Various bodybuilding firms equipped the W 110 chassis with special bodies (ambulance and hearse, to name but two). For the first time Mercedes-Benz also built its own production station wagon. These "universal" versions were produced in Belgium at IMA and were forerunners of the subsequent station wagon models.

Mercedes-Benz 115 and 114 series (1968 to 1976)

The saloons from the 115 and 114 series introduced in 1968 were the first autonomous generation from the Mercedes-Benz upper mid-range series. The body of the W 115/W 114 featured balanced proportions and straight lines, despite being compact in comparison with the then current large luxury models. Unitary body construction had previously precluded such independent design.

The four-cylinder models of the 115 series, the 200, 220, 200 D and 220 D, were the first models available, along with the six-cylinder 230 and 250 models (W 114). The 2.5-litre injection engine was initially reserved exclusively for the coupe. In 1972 the 280 and 280 E versions joined the series as new top-of-the-range models. Finally, in 1974 the five-cylinder diesel engine in the 240 D 3.0 celebrated a world premiere.
The suffix "/8" in the internal model designation initially only stood for the year in which the series was launched. It later gave rise to the more familiar "Stroke 8" – a moniker that represented the entire model series. In addition to the saloon, the "Stroke 8" was available as a coupe and a long-wheelbase saloon. A station wagon was developed, but never put into production. The chassis of the W 115 and W 114 were used as the basis for various special bodies. But the saloons also served as a basis for the Experimental Safety Vehicles (ESF) in which Mercedes-Benz studied future solutions for vehicle safety.

Mercedes-Benz 123 series (1975 to 1985)

In 1976 the 123 series opened up a new era in the upper mid-range series of Mercedes-Benz. The saloon was followed in 1977 by a coupe, a long-wheelbase saloon, and for the first time also a production station wagon. In the series' first year, the models 200, 230, 250, 280 and 280 E as well as the 200 D, 220 D, 240 D and 300 D were initially put on sale. During the lifetime of the series the performance of the various models was enhanced through technical improvements. In addition, in 1980 the 200 was equipped with a new engine (M 102), and the 230 E (1980) and 300 D Turbodiesel (1981) were added to the range.

With its variety of body forms, the 123 series underpinned its role as an autonomous model family within the Mercedes-Benz passenger car range: the sportily styled coupe (C 123) and above all the elegant station wagon model (S 123) took their place alongside the saloon and long-wheelbase saloon. With the station wagon, Mercedes-Benz set standards for a lifestyle and leisure car fit for families.

When launched by Mercedes-Benz in 1980, the station wagon was also the first passenger car in Germany to feature a turbocharged diesel engine. The 300 TD Turbodiesel had the same engine as the 300 D Turbodiesel and the 300 CD Turbodiesel coupe, both of which were built exclusively for the US market.

Mercedes-Benz 124 series (1984 to 1996)

The 124 series introduced in 1984 was the first vehicle family from Mercedes-Benz to bear the name E-Class. At its debut, however, the model designation still followed the classic pattern. Aesthetically and technically, the W 124 with its functional and sporty lines and high-strength sheet steel body closely followed the compact class W 201.

Mercedes-Benz first put the new series on sale with the models 200, 230 E, 260 E and 300 E as well as the 200 D, 250 D and 300 D; the 200 E was built for export. Many more models followed. The top-of-the-range models were the 500 E (later E 500) and E 60 AMG. The range of 124 series models was expanded by different body variants (coupe, station wagon, cabriolet and long-wheelbase saloon). In addition, Mercedes-Benz introduced 4MATIC four-wheel drive in the 124 series.

In June 1993 the twice-revised series was given a new name: the family was henceforth called the E-Class, by analogy with the S-Class and C-Class. The individual models were designated by the letter E and three digits representing the engine displacement. Depending on engine type, supplements such as "Diesel" were added to the abbreviation. The different body shapes, on the other hand, were no longer reflected in the vehicle name.

Mercedes-Benz 210 series (1995 to 2003)

The debut of the new 210 series E-Class in 1995 made a strong visual impression: the new upper mid-range series from Mercedes-Benz now viewed the world through four "eyes". This fresh face, which immediately won the “red dot” design award, provided a fitting match for the car’s engineering and equipment features. Numerous technical highlights, from the Electronic Traction System (ETS) to the belt force limiter, were included as standard equipment. For the first time the E-Class afforded a choice between three design and equipment lines (CLASSIC, ELEGANCE, AVANTGARDE).
The W 210 entered the market with the E 200, E 230, E 280, E 320 and E 420 as well as E 220 Diesel, E 290 Turbodiesel and E 300 Diesel. In subsequent years further models were added to the series, including the high-performance E 50 AMG (1995) and E 55 AMG (1997) models, the innovative E 220 CDI (1998) and the E 200 Kompressor (2000), which picked up on old traditions.

The station wagon (S 210) once again scored highly in this series as a true marvel of spaciousness, its load capacity a full 70 litres greater than that of its predecessor. At the same time the engineers further improved the station wagon’s passive safety. Long-wheelbase saloons, chassis for special bodies and, for the first time in the history of the upper mid-range series, special protection vehicles also featured in the 210 model series.

Mercedes-Benz 211 series (since 2002)

The 211 series E-Class was the eighth generation of this
Mercedes-Benz success model. The saloon was introduced in 2002. Its design put a new interpretation on the twin-headlamp look of its predecessor. The new E-Class was launched with three petrol engines and two CDI models and was available in the design and equipment lines CLASSIC, ELEGANCE and AVANTGARDE.

The numerous innovations focused on safety and efficiency. The technical innovations ranged from a front end with even larger deformation zones through two-stage belt force limiters to active bi-xenon lights. Standard equipment included the SBC™ electrohydraulic brake system and a sensor-controlled automatic climate control. The standard equipment package was further improved in the 2006 facelift.

The 211 series E-Class also set standards in the area of drive system technology: In 2004 Mercedes-Benz presented the E 200 NGT, then the most powerful production saloon to feature a natural gas drive. And in 2006 the E 320 BLUETEC was the first car in which Mercedes-Benz marketed its innovative technology for the reduction of diesel engine emissions. The debut of the E 320 BLUETEC in North America was followed in 2007 by the E 300 BLUETEC for the European market; parallel to this, the E 350 CGI made its appearance, featuring an ultramodern petrol direct-injection engine: the E-Class was well on its way to the future.


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Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART IV



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Stuttgart, Germany, Aug 01, 2008

Resumption of production: 136 and 191 series (1946 to 1955)

* Commercial vehicles, urgently needed in the direct aftermath of the Second World War, were quickly followed by saloons

* State-of-the-art with all-steel body

* First new passenger car design follows in 1949


Under difficult conditions, reconstruction of the Daimler-Benz Untertürkheim plant began in the aftermath of the Second World War. In addition to the destruction caused by the war itself, these pioneering days were marked by a lack of skilled workers, materials and energy. Under such circumstances it was impossible even to consider the development of new models. So when automobile production resumed in 1946 the Stuttgart brand fell back on the 170 V (W 136), a vehicle it had built from 1936 to 1942. The 170 V was also the first direct forerunner of today's E-Class. But instead of elegant saloons of the upper mid-range category, the first vehicles to come off the assembly line were delivery vehicles – pickups and panel vans – along with ambulances and police patrol cars. These commercial vehicles were urgently needed for Germany’s reconstruction effort.

The new edition of the 170 V was internally designated the 136 I to distinguish the post-war model from its predecessor. In May 1946 the first vehicle – a pickup truck – left final assembly. It was powered by a 28 kW (38 hp) 1.7-litre four-cylinder engine. In June the first panel van followed, and in September and October Mercedes-Benz introduced an ambulance and a police patrol car based on the 170 V. The bodies of these model variants were still relatively simple constructions owing to difficult production circumstances during the post-war period. In total, the first year of production aw assembly of 214 vehicles; by 1947 this figure had risen to 1,045.

1947: Return of the saloon

July of the same year saw production of the 170 V Saloon commence again. In contrast to the pre-war model introduced in 1936, the new automobile was given an all-steel body. This, too, was a reason why Mercedes-Benz offered only a four-door saloon, whereas before the war the 170 V was available in seven body variants. The resumption of passenger car production definitely marks the beginning of the more recent history of the upper mid-range series at Mercedes-Benz. The 170 V set an important trend that extended beyond its own market segment, because initially it was to remain the basis of the first post-war Mercedes-Benz passenger cars, including the 170 D and the 170 S (both dating from 1949) and its variants.

In its own class the 170 was not actually superseded by the 120 series with its three-box body construction until 1953. In the prestige car segment, on the other hand, the 300 model (W 186 II) made its debut in 1951, along with the Mercedes-Benz 220 (W 187) luxury saloon. The last 170 was built in 1955. The different versions of the delivery vehicle also profited from the start of production of the saloon in 1947. They now came with a modified cab, the structure and equipment of which met saloon standards. At the turn of the year 1949, the design engineers also adapted the ambulance concept to meet raised demands. The ambulance was given a more spacious, modernised body, which was built in Bochum by the Lueg company.

1949: First newly developed passenger cars after the war

At the Technical Export Fair in Hanover in May 1949, Daimler-Benz introduced the first Mercedes-Benz car models featuring new post-war designs: the diesel model 170 D and the prestigious 170 S Saloon derived from the 170 V. To a large extent the 170 D corresponded to the 170 V, but it had a 1.7-litre diesel engine, which the Stuttgart engineers developed from the petrol engine of the 170 V. The prechamber engine developed 28 kW (38 hp), like the petrol engine. The 170 D was the first Mercedes-Benz diesel car of the post-war period. It was the carefully thought-out successor to the 260 D of 1936 (W 138) and, as heir to this diesel pioneer, laid the cornerstone for the ongoing success of this drive system variant in Mercedes-Benz passenger cars. Compared with its petrol-powered twin, the 170 D consumed appreciably less fuel – yet had almost identical performance. It provided the platform on which was built the good reputation of the company’s diesel cars, renowned for their longevity and economy. In addition, in the 170 D's early production years the ready supply of diesel oil made this model an attractive proposition, whereas even five years after the war petrol was sometimes still hard to find.

The 170 S introduced at the same time as the 170 D was the new top model of the Mercedes-Benz car range. Technically it was based on the 170, but in styling and concept it made design references to the pre-war 230 model (W 153). With its spacious body, additional comfort, and technical enhancements – which ranged from a more powerful engine to improved front axle – the 170 S was the top-of-the-line model at Mercedes-Benz. In addition to the saloon, Stuttgart offered a two-seater Cabriolet A and a four-seater Cabriolet B.

Continuous model refinement

In the years that followed, the existing variants of the 170 repeatedly underwent further improvements. As early as May 1950, Mercedes-Benz updated the design of the 170 V and 170 D models. Both got uprated engines through enlargement of the displacement to just under 1.8 litres. The petrol engine now developed 33 kW (45 hp) at 3600 rpm, the diesel generated 29 kW (40 hp) at 3200 rpm. Telescopic shock absorbers, an enlarged rear axle track width and more powerful brakes improved handling. And both models were given larger seats, a wider passenger compartment and a boot that could be accessed from outside. To distinguish them from the original models, internally the improved variants were called 170 Va and 170 Da. In May 1952 the rear track width was enlarged again, and both versions of the 170 were fitted with wide one-piece bumpers and a larger windscreen with an internal covered windscreen wiper drive. The two models were built until August 1953, after which they were followed by the 170 S-V and 170 S-D.

In 1952 the 170 S was also improved in numerous ways. The revised version, designated the 170 Sb (W 191), now had a steering column gearshift and a button-type starter on the dashboard. The camshaft was driven by a duplex roller chain, the track width of the rear axle was enlarged, and the rear axle drive was fitted with hypoid gearing. However, the engine, a 38 kW (52 hp) four-cylinder (slightly less than 1.8 litres displacement), remained unchanged. From the outside the 170 Sb could be recognised by its bigger rear window, and by the fact that the boot lid hinges had been moved under the skin. The 170 Sb was available only as a saloon – production of the two cabriolets had ceased in November 1951. Together with the 170 Sb, Mercedes-Benz introduced as a new model the 170 DS, fitted with the diesel engine of the 170 Da. The diesel-powered saloon proved a great hit with buyers and was sold in much higher numbers than its petrol-engined sister model.

Alternative to the all-enveloping "Ponton" body and basis for special bodies

The 170 S-V and 170 S-D models of 1953 mark the final development stage of the 170. They came onto the market at almost the same time as the more modern 120 series with three-box body, and combined the largely unchanged chassis of the basic 170 with the more spacious body of the 170 Sb and 170 DS. The lack of chrome strips on the louvres of the bonnet, bumpers without horns, and simplified interior appointments distinguished the weaker-powered models externally from the 191 series. The 170 S-V was built until February 1955; production of the more successful 170 S-D did not cease until September of that year.

The 136 and 191 series were also offered as chassis, which various bodybuilders furnished with special bodies. Mercedes-Benz themselves also equipped their vehicles with special bodies. For example, panel van bodies for the 170 D and open police tourers were produced at the Sindelfingen plant. Because of considerable outside demand for diesel-engined chassis, Mercedes-Benz did not start delivering these to external bodybuilding firms until 1950. These coachbuilders then turned them into station wagons, six-seater taxis, ambulances and panel vans. Daimler-Benz even took over the official sale of ambulances equipped with Lueg bodies. The Stuttgart company delivered a considerable number of chassis to foreign coachbuilders, a large percentage of them going as ckd kits (completely knocked down – vehicle construction kits) to Argentina.

136/191 series in the press

The Neue Kraftfahrer-Zeitung, Germany, issue 16/1950, paid tribute to the Mercedes-Benz 170 V and 170 D models: "The Mercedes 170 V and D belong without doubt to the top category of German cars in respect of handling characteristics, performance, equipment, etc. Even if their more expensive, somewhat more powerful brother, the 170 S, is more comfortable in certain respects and perhaps 4-5 km/h faster than the V at top speed, this new V is surely striving to emulate it."
Automobil-Revue, Switzerland, reported on the Mercedes-Benz 170 V in issue 12/1950: "The Mercedes-Benz 170 V is anything but a youthful automobile. But is it not a vehicle which in terms of its performance, its unpretentiousness, in terms of its economy, safety and long service life, and – last but not least – also in terms of beauty, can still stand comparison today with the latest, chrome-flashing creations of automotive fashion?"

Massimo Manni wrote in Motor. Settimanale di tecnica e propaganda della motorizzazione italiana, Italy, issue 9/1951, about the Mercedes-Benz 170 D: "As soon as the car is running you immediately notice its most striking characteristic to be an enormous elasticity: from the outset the driver feels prompted to drive mostly in 4th, rarely using 3rd gear and hardly at all the low gears, even if he has to deliberately make reckless use of the gas pedal to accelerate again after slowing down."

ADAC-Motorwelt, Germany, issue 11/1950, was quite taken with the performance of the Mercedes-Benz 170 D: "The 170 Da we tested achieved a top speed of 109 km/h! Its accelerating power was absolutely astonishing, and its hill-climbing ability made for great enjoyment."

ADAC-Motorwelt, Germany, issue 10/1953, wrote of the 170 S-V and 170 S-D models: "As the new S-V and S-D really are just a combination of long-time proven, further developed components, one really can not expect big surprises. Nevertheless, the driving qualities – one is tempted to call them unique for a car of this power class – once again give cause for enthusiasm."

































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Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART V



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Stuttgart, Germany, Aug 01, 2008

Integral body construction: 120 and 121 series (1953 to 1962)

* Model series breaks with pre-war traditions in formal and technical respects

* Continuous model refinement permits a long lifespan

* A unitary body design becomes the first Erlkönig – the name used by the automotive industry for prototypes


At its launch in August 1953, the new Mercedes-Benz represented a formal and technical break with pre-war traditions. These were the traditions that had moulded the 170 family, along with the 300 and 220 models. The W 120 was now the first Mercedes-Benz car to feature a three-box design with self-supporting chassis/body structure, known in Germany as the "Ponton". Characteristic of the three-box principle, first realised in a body in the USA in 1946, are fully integrated wings, a rectangular body outline, and the almost square-hewn shape of the front end, the passenger compartment, and the rear end. At the same time, the concept allowed for reduced wind resistance (resulting in less wind noise and improved fuel consumption), as well as an appreciably more spacious interior.

The 180 model became a basis from which Mercedes-Benz derived further vehicles in the upper mid-size category with petrol and diesel engines, and starting in 1954 also the luxury saloon of the 220 family (series 180 and 128 with six-cylinder engines) and the 219 model (W 105). The 190 SL sports car presented in 1955 was also a variant of the three-box Mercedes-Benz 190 Saloon (W 121), which was developed by Mercedes-Benz at the suggestion of US importer Maxi Hoffmann. Whereas the 190 SL had an independent body, design of the luxury cars closely followed that of the 180. The 220 a and its successors were basically distinguished from the upper mid-range model by a longer wheelbase (2.82 metres instead of 2.65), a longer front end, and six-cylinder power plants instead of the four-cylinders of the 180 and 190 models. This concept of a standard body was also retained by the Stuttgart brand for the subsequent generation of "tailfin" saloon models.

Self-supporting body

For the first time in the history of Mercedes-Benz passenger cars, the 180 had a body designed as a self-supporting unit. The metal panels of the body were solidly welded to the frame-floor system with which it formed a single structural unit. Compared to the conventional design, which consisted of a body mounted on a frame, this design increased torsional stiffness at the same time as reducing weight. The 180's design characteristics made it an ultramodern automobile of its day. The new saloon received an enthusiastic verdict from the experts.

The chassis was also improved on certain points. Compared with the 170 Sb, the front wheels, located by double wishbones, were now no longer attached directly to the frame, but to a so-called subframe. This was a U-shaped axle carrier, welded together from two pressed metal parts, and to which not only the front suspension, but also the engine, transmission and steering were attached. The subframe was mounted to the front section of the frame by means of three noise-reducing silent blocks. The rear suspension made use of the tried and tested swing axle, but now additionally had the two wheels located by radius rods set far apart.

1954: Diesel drive in the "Ponton"

In January 1954, the 180 D model was added to the 120 series. This subsequently turned out to be the most successful of the four-cylinder “Ponton” models, with almost 150,000 units being built in total. The model was especially popular among taxi drivers. Apart from the diesel engine adopted from the 170 DS, the 12-volt on-board electrical system and a modified rear axle ratio, the saloon with the prechamber diesel OM 636 VII (29 kW/40 hp) was identical with its petrol-driven sister model, that model being powered by the 38 kW (52 hp) M 136 VII L-head petrol engine borrowed from the 170 Sb.
The two models of the 120 series was given a new rear axle in September 1955. This single-joint swing axle with low pivot point had been introduced one-and-a-half years earlier in the 220 a model. This made for improved handling characteristics owing to smaller changes in track and camber.

1956: Mercedes-Benz 190

The model 190 (W 121) with M 121 B I petrol engine added a third vehicle to the four-cylinder "Ponton" model range in March 1956. The 190 was extensively based on the proven 180, but had a distinctly more powerful engine, developing 55 kW (75 hp). The valve-in-head 1.9-litre power plant originally came from the 190 SL, in which it generated 77 kW (105) hp. The saloon, however, had a derated variant with a lower compression ratio, a more docile camshaft and just a single compound carburettor. Compared with the 180 models, the rear part of the engine was mounted on two additional support points on the subframe.

Mercedes-Benz adapted the brake system to the performance of the more powerful engine. The 190 had ribbed brake drums at the front and wider brake shoes. Externally, appointment details such as ventilator windows on the front doors and a chrome strip beneath the windows running all around the car distinguished the 190 from its more ordinary brothers. Other telltale distinguishing features included a somewhat wider radiator grille with horizontal chrome ribs, mouldings on the air inlets to the left and right of the grille, as well as chromed rain runnels, larger tail lights, wheel rims with cooling slots and hub caps featuring a larger three-pointed star.

1957: Upgrade for the small "Ponton" models

In line with the slogan, "even more valuable, but not more expensive", Mercedes-Benz subjected almost all passenger car models to a more or less apparent revision package in August 1957. The three four-cylinder saloons were given modified interior appointments, licence plate lamps incorporated into the rear bumper horns, and a recessed handle on the boot lid. The most important change concerned the 180 model: the revised version, internally designated the 180 a, now also had a 1.9-litre engine with overhead camshaft. This unit was based on the engine of the 190 model, derated to 48 kW (65 hp) through a lower compression ratio and use of a single unit carburettor instead of the compound carburettor.

The appearance of the Mercedes-Benz 180 was also upgraded: unlike the 180 D it was equipped with the bigger tail lights, air inlet mouldings and somewhat wider radiator grille of the 190, though without the 190's horizontal chrome ribs. From April 1958 onwards the 180 and 180 D models was also fitted with quarterlights on the front doors and the 190 hub caps with the bigger star.

1958: Second diesel "Ponton" car

In September 1958 Mercedes-Benz added a second diesel-powered car to the passenger car line-up, the 190 D. Its 1.9-litre diesel engine, the OM 621 with 37 kW (50 hp), was developed by the engine specialists from the petrol engine of the 190. The appointments of the new model’s body befitted the larger engine. The new diesel's enhanced output and improved smooth running compared with the 180 D made it a sales hit right from the start.

In 1959 the 180 and the two diesel models got the turbo-cooled brake drums and wider brake shoes of the 190 on their front wheels. Also, the outputs of the two petrol engines were increased to 50 kW (68 hp) in the 180 and 59 kW (80 hp) in the 190 by upping the compression ratio. The design changes of summer 1959, at the front and rear ends, for example, were even more noticeable. With them Mercedes-Benz freshened up the appearance of its upper mid-range series models. In the luxury class, on the other hand, the new six-cylinder models of the 111 and 112 series superseded the large "Ponton".

1959: Modernising the upper mid-range series

The models with the modernised styling were now internally designated 180 b, 180 Db, 190 b and 190 Db. The designers made conspicuous changes particularly to the front and rear: the bonnet was now flatter, and the wider and lower radiator grille was a more suitable design for the new six-cylinder models. The bumpers were made a little more massive, but now made do without horns. And the taillights featured integral reflectors. The 190 b and 190 Db models differed on the outside from their 180 counterparts by having full length chrome strips running beneath the windows, as well as chromed rain runnels.

Inside, too, the "Ponton" models benefited from the model refinements, in which passive safety played an important part. Like the new six-cylinder models they featured a padded dashboard with flexible, partly recessed controls and a steering wheel with padded boss.

In August 1961 the four-cylinder 190 c and 190 Dc tailfin models (W 110) replaced the 190 "Ponton" saloons. However, production of the 180 and 180 D continued until 1962. For this extended production run the 180 D was equipped with an entirely new engine. This variant of the OM 621 was developed from the engine in the 190 D and generated 35 kW (48 hp) from a displacement of two litres.

First Erlkönig also used as basis for bodies

The Mercedes-Benz 180 had a lasting influence on German automotive terminology – even before it went to market. For the "Ponton" was the very first Erlkönig, a term used today to refer to the camouflaged prototypes of future automobiles. The term was coined by the motor magazine auto motor and sport. In 1952, the magazine published a first picture of the future Mercedes-Benz 180 together with a parody of Goethe's Erlkönig (Erlking) ballad. This gave rise to an entire series of rhymed affronts against the automotive industry (the rhyme form was intended to mitigate the affront). The transliteration of unmasked test cars in verse form has long since gone out of fashion, but such vehicles are still labelled Erlkönig in Germany today, and the term has even found its way into the dictionary.

The "Ponton" models of series 120 and 121, like their predecessors, were also available as chassis with partial bodies on which domestic and foreign bodybuilders constructed ambulances, station wagons and other special bodies. Particularly the ambulance bodies by the firms Binz in Lorch and Miesen in Bonn gained a high degree of popularity. Over their production life the chassis variants enjoyed the same model refinement measures and additions to the model range as the saloons.

During the nine-year reign of the "Ponton" until October 1962, Mercedes-Benz built a total of 442,963 units of the 180 to 190 D models. The number includes 437,310 saloons and 5,653 chassis with partial bodies. From a technical viewpoint, the subsequently manufactured Mercedes-Benz saloons also featured a three-box body. But in collective usage the name "Ponton Mercedes" remained reserved for the first model generation.

120/121 series in the press

Werner Oswald had this to say about the Mercedes-Benz 180 in auto motor and sport, Germany, issue 24/1953: "What particularly bespeaks its exceedingly easy operation, practicality and driving safety is that, even though it is not exactly small, light or slow, one is able to handle it extremely well without any preparation and feel immediately at home and safe in it. From the very first moment, without hesitation you can take it to the limits of the possibilities afforded by its engine and chassis."

Commenting on the epoch-making new development of the Mercedes-Benz 180, auto motor and sport, issue 24/1953, said: "It can be expected that the passenger car range of Daimler-Benz AG will take its cue from it for a long time to come."
Motor Rundschau, Germany, 1958, gave the 180 D a good reference especially in regard to its economy: "Frugality, endurance, flexibility and tenacity are characteristics of this four-cylinder diesel engine. It consumes two or three litres less diesel per 100 km than the corresponding car with petrol engine."

Motor Trend, USA, reported on a test drive by Bill Carroll from west coast to east coast in the 190 D: "Breaks all economy records with stock 190 Mercedes-Benz Diesel."



























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Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART VI



OFFICIAL PRESS RELEASE

Stuttgart, Germany, Aug 01, 2008

Enter the small "Tailfin": 110 series (1961 to 1968)

* The "Universal" variant is forerunner of the station wagon

* A special long-wheelbase version provides seating for eight

* Mercedes-Benz launches its "tailfin" with six-cylinder engine in 1959


For the luxury class of Mercedes-Benz, the tailfin age had already dawned in 1959 with the 220, 220 S and 220 SE models of the 111 series. This new body shape with its cheeky take on the tailfin motif of American car designs, also conquered the intermediate class in August 1961. At first Mercedes-Benz offered two four-cylinder models, the 190 and 190 D of the 110 series. They superseded the "Ponton" models with the same designations.

The modular principle of the shared body was applied with particular thoroughness by Mercedes-Benz in the small and large versions of the tailfin era: The difference in wheelbase – 17 centimetres in the "Ponton" –was now reduced to all of five centimetres (2.70 metres in the W 110 and 2.75 metres in the W 111). Upper mid-range and luxury class vehicles were distinguished by the look of their front ends. From the windscreen to the rear end, however, both model series shared a body in which mainly trim elements made for differences. Along with this largely identical body, the two model series were linked by their common suspension.

Joint development

The advantages of the shared body to Mercedes-Benz were mainly of an economic nature, because it permitted cost reduction for development, production and stocking of spare parts. Moreover, owing to the largely identical body, the driver of an intermediate class model could appreciate the full benefits of the spaciousness of the interior and boot. But an even stronger assimilation between the two model series also involved drawbacks: On the one hand, the four-cylinder models were 23 centimetres longer overall than the predecessor models, despite the fact that parking space was already getting scarce and called for more compact mid-size cars. On the other, many a luxury class customer wished for greater distance from the models of the smaller series.

But on closer inspection it really was not possible to confuse the two model series: conspicuous features of the 190 included round headlamps, a shorter front end, and direction indicators that had been adopted from the "Ponton" models and which sat on the ends of the front and rear wings. Connoisseurs also immediately noticed the disappearance of familiar items from the six-cylinders, such as the breathers in the C-pillars, including the trim elements that accompanied them, and the chrome corners above the front bumper.

The engineering of the new 190 model also borrowed heavily from the 220: the front and rear suspension and the brake system were adopted unchanged from the big brother. The frame-floor system also came from the six-cylinder models and was adjusted to the shorter front end of the four-cylinder and its shorter wheelbase. And together with the 220 the 190 and 190 D got a dual-circuit brake system with brake booster and front disc brakes in August 1963.

Two-litre diesel in the 190 D

The new diesel model 190 D actually should have been called the 200 D. Its OM 621 III prechamber engine had the cylinder bore enlarged to give it just about ten cubic centimetres more displacement than its predecessor. It also featured a modified camshaft and retuned injection pump along with an optimised intake manifold. Owing to these changes the engine now developed 40 kW (55 hp) – 3.7 kW (5 hp) more than its predecessor.

The Mercedes-Benz engineers did less reengineering on the petrol engine of the sister model. It continued to produce 59 kW (80 hp), but ran more smoothly. From August 1962 onwards the Stuttgart company offered the 190 with a four-speed automatic transmission as an optional extra; as of July 1963 this option was also available for the diesel model. For both cars the additional price for the comfortable extra was DM 1400 – the same as for the six-cylinder models.

1965: Departure from the shared body

In August 1965 Mercedes-Benz introduced the new luxury class models of the 108 series. This marked the beginning of the end of the shared body concept, which had been one of the defining characteristics of the saloons of two car generations. Concurrently with the debut of the S-Class predecessor, Daimler-Benz also presented the two four-cylinder models in improved form and with new model designations. The 200 and 200 D succeeded the 190, which had been in production for four years.
There were only minor changes to the body: combined direction indicators, for example, and parking and fog lamps underneath the headlamps – the direction indicators on the wings disappeared. The old taillights made way for trapezoidal and slightly more angular lamp units. The designers included the breathers and trim elements in the C-pillars, familiar features from the six-cylinder models. At the rear, the ornamental mouldings of the fins were dropped; instead there was now a continuous chrome strip terminating the boot lid and a moulding underneath each tail light unit.

1965: First six-cylinder in the small "tailfin" model

In addition to the 200 and 200 D models, Mercedes-Benz also presented the new 230 model. This 110 series saloon externally resembled the four-cylinder cars. But under its bonnet the 2.3-litre six-cylinder of the 230 S luxury model purred. For use in the intermediate class the M 180 VI in-line six-cylinder was initially derated to 77 kW (105 hp) by combining it with the carburettor of the two-litre M 121 B XI engine. From July 1966 onward the Mercedes-Benz 230 then even got the unchanged engine of the 230 S with an output of 88 kW (120 hp). This increased its top speed to 175 km/h (previously 168 km/h); 0 to 100 km/h acceleration improved from 14 seconds to 13 seconds.

The Mercedes-Benz 200, created from the revised 190 model, could easily holds its own in terms of performance. Its engine featured several technical innovations (as did the four-cylinder diesel). The displacement of the 1.9-litre petrol engine grew to two litres through enlargement of the cylinder bore. At the same time the compression ratio increased and the old downdraught carburettor was replaced by two units of a modified type. The output thus rose by an impressive 11 kW (15 hp) to 70 kW (95 hp). This now gave the 200 a top speed of 161 km/h and a 0 to 100 km/h time of 15 seconds. For the 190 model the corresponding figures were 150 km/h and 18 seconds. The crankshaft was now supported by five bearings to improve the smoothness. The diesel variant also profited from this measure. The performance of the 40 kW (55 hp) 200 D, however, did not differ from that of its predecessor (top speed 130 km/h, 29 seconds from 0 to 100 km/h).

First station wagon from Mercedes-Benz

As was tradition with the four-cylinder models of the upper mid-range series, Mercedes-Benz also delivered series 110 models as partially bodied chassis to bodybuilders in and outside Germany. But the small "tailfin" also was modified by the Stuttgartpeople themselves: at the Brussels Motor Show in January 1965 the company premiered the Mercedes-Benz 190 D Universal, a station wagon variant built by the Belgian firm IMA. This version of the 190 D was sold by Mercedes-Benz as a standard version through its own dealer network. The Universal was thus the forerunner of the future station wagon, which was not introduced as a body variant until the appearance of the 123 series.

The revision and supplementation of the intermediate car range by Mercedes-Benz also had an impact on the IMA range. The Belgians finally offered four variations of their station wagon: apart from the 200 D Universal, as a logical successor to the 190 D Universal, there were now also station wagon versions of the 200, 230 and 230 S models. So Mercedes-Benz now not only offered a Universal station wagon with six cylinders in the guise of the upper mid-range series, but even on the basis of the luxury model series, 111. With its longer front end and the typical face of the six-cylinder saloons, with vertical rectangular headlamps and ample chrome ornamentation, this 1966 variant is a particularly representative ancestor of subsequent lifestyle station wagons. All four variants were sold in Germany from August 1966 to the end of 1967 through the Daimler-Benz sales organisation.

Long-wheelbase chassis

The new Universal models had 15-inch wheels, a changed rear axle ratio, reinforced springs and a newly developed hydropneumatic compensating spring as basic equipment. All chassis on which the special versions of other manufacturers were based also profited from these improvements. In particular, the ambulance bodies of Binz in Lorch and Miesen in Bonn enjoyed great popularity.

A particularly high degree of flexibility was ensured by the offer of long-wheelbase chassis versions of all revised models, from 200 D to 230, which Mercedes-Benz included in its line-up. The wheelbase grew by 40 centimetres to 3.10 metres. It provided the preferred basis for ambulances and hearses.

Even more space was offered from April 1967 on by a 200 D-based saloon with 3.35 metre wheelbase. This vehicle could seat seven passengers along with chauffeur. Such special versions of the economical diesel saloon were requested in particular by a great many taxi and hire car operators abroad. But airlines, consulates and government authorities also used the eight-seater.

Production of the last "tailfin" models ceased in February 1968 after the technically and stylistically completely redeveloped "Stroke 8" models had hit the market in January. During six-and-a-half years of production, a total of 622,453 saloons and 5,859 partially bodied chassis were manufactured at the Sindelfingen plant.

110 series in the press

Automobile News, USA, wrote about the Mercedes-Benz 190 D in its August 23, 1961, issue: "Daimler-Benz was a pioneer in the development of the high-speed diesel engine, and the new 190 D is powered by an engine which 38 years of research and development by the engineers of Daimler-Benz have perfected."
The magazine Motor Tourist, Germany, issue 3/1963, had this to say about the Mercedes-Benz 190 with automatic gearshift: "Motor Tourist had the opportunity to scrutinise the Mercedes 190 with automatic gearshift. The result: wholehearted approval. Driving is a pleasure with such a car, and even long-distance travel is enjoyable."

Hobby, a German magazine, wrote on the Mercedes-Benz 200 in issue 25/1965: "With its two-litre engine it really belongs to the large class, even if Untertürkheim modestly calls it an intermediate class car. Those used to driving the usual midsize cars at any rate will feel like captains aboard a steamship at the wheel of the 200. It will need more space than the cars to which they are accustomed."

ADAC-Motorwelt, Germany, issue 2/1966, reported on the Mercedes-Benz 230 of the 110 series: "In terms of the performance offered, the driving qualities, the quality of workmanship, the high degree of built-in safety, and the spaciousness, truly adequate for five persons, this car is an intermediate class six-cylinder worth its price."






















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Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART VII



OFFICIAL PRESS RELEASE

Stuttgart, Germany, Aug 01, 2008

"Stroke 8": 115 and 114 series (1968 to 1976)

* First autonomous body for the upper mid-range series

* A coupe as exclusive variant appears in 1968

* The Mercedes-Benz 240 D 3.0 is the first production car with a five-cylinder diesel engine


The new Mercedes-Benz models of the mid-size series 115 and 114 made a clean break with the "tailfin" era with its unitary body. The saloon was sporty, elegant, up to date, and above all a saloon in its own right. It was a demonstration of respectable flair and love of technical innovation. On top of that it reflected the awareness of its developers for the newly defined role of an intermediate model series. Experts and public alike greeted the new intermediate class model from Mercedes-Benz enthusiastically when it was first presented to the media in January 1968. Internally designated with the abbreviation /8 because of its year of birth, the family of vehicles was soon dubbed the "Stroke 8".

With the "Stroke 8" of 1968 Stuttgart started a design revolution that laid the foundations and set the standards for the subsequent generations of the midsize model series from Mercedes-Benz, today's E-Class. Initially the model range comprised six saloons: the four-cylinder 200, 220, 200 D and 220 D models formed the 115 series, and the two six-cylinder variants 230 and 250 were designated the 114 series. As the top-of-the-range model the Mercedes-Benz 250 was distinguished from the other models by its double front bumper. From the beginning the demand for all models was high and soon resulted in long waiting times for delivery.

Development work since 1961

Designers and engineers began planning the new model series as early as 1961 – the year in which the small tailfin had just reached the market. Project leader was Dr. Fritz Nallinger, Mercedes-Benz chief engineer, member of the Board of Management and Technical Director of Daimler-Benz AG. The technical structure of the forthcoming vehicle was determined by Karl Wilfert, Head of Body Development. Responsible for the design was Paul Bracq, assisted by Bruno Sacco. This new intermediate class had to be an independent, successful model – that was clear to Development from the start. So the shared body was no longer an option. Stuttgart therefore strove to create a complement to the new luxury class 108/109 series for the year 1968.

As early as 1960 chief engineer Nallinger defined important benchmarks for the new vehicle. In direct comparison with the luxury class model the design was to be appreciably more compact than differences between the four and six-cylinder variants of the shared body allowed. In view of the smaller exterior dimensions, it would be important to ensure good space economy in the passenger compartment. The shape had to be timeless in its simple elegance. In 1964 the designers' models already showed the outlines of the future saloon. At that point, however, different designs of the front end were still under discussion. In analogy to the former distinction between four and six-cylinder variants, the versions of the new model family with smaller engines were to get a simpler front end with horizontally arranged rectangular headlamps. Finally, in early 1965, a decision was made to refrain from such differentiation, to which the two model series numbers 115 and 114 later still would testify. This was the year in which Professor Dr. Hans Scherenberg took over project management, when Nallinger went into retirement.

Other body variants developed in addition to the saloon were a coupe, a long-wheelbase saloon and a station wagon. Whereas the sportier two-door and the long-wheelbase version of the saloon actually made it into production, the station wagon was ultimately barred from series production. On the other hand, the basic design of the rear end was later harmoniously transferred to the next model series, the 123, with only minor changes. In 1967 the production facilities for the new series were set up in Sindelfingen. Prior to the market launch proper, 1100 preproduction vehicles of the two series were produced there, limited initially to six models.

1968: Double premiere in Sindelfingen and Geneva

Mercedes-Benz presented the "Stroke 8" in 1968 in a double premiere: the series had its debut in front of trade journalists gathered at Sindelfingen in January; the general public got its first chance to assess the new saloon at the International Motor Show in Geneva that March. The six models initially available met with the broad approval of the experts and the general public. The view expressed by the motor magazine auto motor and sport that Mercedes-Benz had dared to take a "stylistic swing to the left" can surely be put down mainly to the political situation of 1968. The "Stroke 8" deserved all the more praise for its clear, classic yet modern lines and its fresh, sporty appearance.

And yet the Mercedes-Benz character that determines automotive identity was fully retained in this model. The designers and engineers handled a task well that called for innovation and sensitivity. On the one hand, a clearer distinction now was made between the luxury and upper mid-size categories in the Mercedes-Benz product line-up. On the other hand, the family resemblance between the now independent models was still visible, as were their origins in the "tailfin" generation.

Complete range: debut of the new series with six saloon models

The new Mercedes-Benz started out with six saloon models. The 200 and 220 were powered by the new four-cylinder M 115 carburettor engine, with 2-litre displacement (70 kW/95 hp) and 2.2-litre displacement (77 kW/105 hp) respectively. The 200 D and 220 D diesel variants also featured a new engine, the OM 615, in a 2-litre version with 40 kW (55 hp) and a 2.2-litre variant with 44 kW (60 hp) output. The 2.3-litre in-line six-cylinder M 180 engine of the 230 model was already familiar from the predecessor model; it developed 88 kW (120 hp), as in the "tailfin". New in the engine range was the 2.5-litre in-line six-cylinder M 114, which generated 96 kW (130 hp). For the new petrol engines of both series, Mercedes-Benz relied on proven technology: the 200 and 220 models (M 115) and the 250 (M 114) were equipped with in-line carburettor engines with two overhead valves per cylinder and an overhead camshaft. The four-cylinder power plants (petrol and diesel) proved so reliable that the 123 series that followed in 1976 was initially equipped with the M 115 and OM 615 engines.

Good handling owing to the diagonal swing axle

The outstanding constructional detail of the new model series was to be found under the boot: the "Stroke 8" models were fitted with a so-called diagonal swing axle, making this the first Mercedes-Benz production car to have a rear axle with semi-trailing arm. The diagonal swing axle, equipped among other things with auxiliary rubber springs and a torsion-bar stabiliser as standard, was an advancement of the single-joint swing axle introduced in 1954 in the 220 a, and was used in all Mercedes-Benz cars from 1955 onwards. Compared with the predecessor models, the new axle afforded distinct improvements in handling characteristics without sacrificing ride comfort. The improved handling quality was also acknowledged by international motor journalists, who were invited to the old Targa Florio course in Sicily for a preliminary road test in December 1967. Snow, ice and the narrow mountain roads of the Madonie placed great demands on the suspension, but the Stroke 8 gave an excellent account of itself.

And the "Stroke 8" was not a lightweight by any means. Wheelbase and weight of the upper mid-range series of Mercedes-Benz had grown consistently bigger from the "Ponton" (2.65 metres and 1.22 metric tons) through the "tailfin" (2.70 metres and 1.28 metric tons) to the "Stroke 8" (2.75 metres and 1.36 metric tons). However, the overall length of the new model, 4.68 metres, was less than that of the 110 series. The new proportion of overall body length to wheelbase was also visible in silhouette, with balanced proportions and clear lines. The additional weight was due mainly to measures designed to improve passive safety, which put into practice the ideas of Mercedes-Benz engineer Béla Barényi, a pioneer in this field.

Coupe emphasises sporting note

In November 1968 the model line-up of the new Mercedes-Benz was rounded off at the upper end by the 250 C and 250 CE coupes. That same winter the Stuttgart company also introduced a long-wheelbase saloon. In particular, the launch of the sporty two-door was a highly regarded premiere. After all, this was the first time the brand with the three-pointed star had offered a coupe version as an exclusive variant in the intermediate class. Of the two coupes, the 250 CE proved exclusive in a dual sense. Its 2.5-litre injection engine (110 kW/150 hp) was reserved exclusively to this body type. In the 250 CE, Bosch D-Jetronic was used for the first time in a Mercedes-Benz production car, an electronically controlled fuel injection system that made it possible to dispense with the conventional mechanically controlled multi-plunger injection pump.

Compared with the future coupes based on the E-Class, those of series 114 very closely followed the saloon in their design: neither wheelbase nor overall length differed; apart from the elimination of the B-pillar, the modified roof was evident as a result of an almost five centimetre lower roof line and the sharper rake of the windscreen and rear window. Even more exclusive, at least as far as price and unit volume were concerned, was a third body variant introduced by Mercedes-Benz in December 1968: the saloon with extended wheelbase (65 centimetres longer).

More space: long-wheelbase saloons

The concept of this vehicle was already familiar from the extended 200 D of the "tailfin" generation W 110. The long-wheelbase version of the "Stroke 8" also offered seating for the driver and seven passengers in three rows. At first, this most expensive variant of the "Stroke 8", and the one with the smallest unit volume in production (in the end output in fact added up to almost 10,000 units), was available as the 220 D and 230. In autumn 1973 the 240 D extended the offer.

The long-wheelbase saloon, like its predecessor, was mainly used as a taxi and hire car, as well as by travel firms, airlines, embassies and government authorities. Since sporty performance was less important in these cars than fuel economy, the percentage of diesels among the eight-seaters was very high across the entire series: slightly less than 78 percent of all long-wheelbase saloons were ordered with a compression-ignition engine – an appreciably higher rate than for the standard wheelbase saloons.

Chassis for bodies

In keeping with tradition, both body variants also were available as partially bodied chassis. They were fitted with special bodies by domestic and foreign bodybuilders. In particular, ambulances, fire brigade vehicles, hearses and other branch-specific special versions were produced. The ambulance bodies by Binz in Lorch and Miesen in Bonn attained a high degree of popularity. The best-known manufacturers of hearses included the coachbuilding firms of Pollmann in Bremen, Rappold in Wülfrath, Stolle in Hanover and Welsch in Mayen. Independent bodybuilders also supplied station wagons to the customer. Initially the 220 D, 220 and 230 (short wheelbase), and 220 D and 230 (long wheelbase) were made available as a basis for conversions. Then after the facelift in autumn 1973, the 240 D, 230.4 and the six-cylinder model 230.6 were also available as chassis.

New engines for the intermediate range

In April 1972 the 280 and 280 E models were added to the range. Both were available as saloon and as coupe and were powered by the newly designed 2.8-litre M 110 engine. The six-cylinder had overhead valves in a V configuration and two overhead camshafts. In the carburettor version it developed 118 kW (160 hp), and with manifold injection 136 kW (185 hp). The saloons of the new top-of-the-line "Stroke 8" models could be distinguished from the less powerful variants even without the model plate: in addition to the familiar double bumper of the 250, they had a rear bumper that wrapped right round to the wheel cut-outs, as well as two tailpipes.

On the coupe side, the 280 C superseded the 250 CE, production of which was discontinued. The 280 CE with the 136 kW (185 hp) injection engine extended the performance spectrum of the series and became the new top-of-the-range model. Since the appearance of the 280 and 280 E, the 250 was delivered to customers with the 2.8-litre power plant M 130 from the 108 and 109 series. In the "Stroke 8" the engine used was a slightly derated version, developing 96 kW (130 hp). The export version of the 250 for the USA and Canada had been coming off the assembly line equipped with this engine since July 1970.

1973: Facelift for the "Stroke 8"

Vehicle safety was the focus of an extensive facelift to which all variants of the 115 and 114 series were subjected in September 1973. Many of the new details were adopted by the engineers from the SL and SLC models of the 107 series and the current S-Class (W 116). They included, for example, flexibly mounted exterior mirrors adjustable from inside, as well as dirt-deflecting moulding on the A-pillars that kept the side windows clean even in the most inclement weather, plus a rain runnel on the rear window.

Particularly conspicuous from the rear view of the car were the ribbed tail lights for minimising dirt collection. This safety-relevant design element was to shape perceptions of Mercedes-Benz passenger cars of all classes over future vehicle generations. The four-spoke safety steering wheel from the R/C 107 and 116 series entered series production of the "Stroke 8" six months before the facelift. From March 1973 onwards, head restraints and inertia-reel front seat belts then also became part of the standard equipment of the 115/114 series.

Highlights from the luxury class and new engines

The improved models were also updated visually to match the look of the S-Class in particular. The radiator grille was now lower and wider, the side windows no longer had quarterlights, the licence plate panel was attached to the front bumper instead of underneath it, and the handle of the boot lid was given a different shape. As the front apron was also adapted to the design of the S-Class, the 250 through to the 280 E models – together with their coupe equivalents – lost their double front bumper. The only saloons of the series that continued to stand out visually from the other variants were the 280 and 280 E, since the designers left them their long rear bumper.

New four-cylinder engines were a part of the model refinements. Since autumn 1973 the OM 616 (48 kW/65 hp) in the 240 D was the top engine in the diesel model range. The 2.3-litre version of the M 115 with an output of 81 kW (110 hp) was the drive unit behind the new 230.4 model, which replaced the 220. The suffix ".4" in the model designation of the new 230 became necessary, because the six-cylinder variant with the same displacement continued to be carried in the range. To make an exact distinction, Mercedes-Benz now offered this original 230 as the 230.6 model.

Five-cylinder diesel engine as a passenger car world premiere

In July 1974 the Stuttgart company finally set standards once again in the development of diesel technology: the 240 D 3.0 of the 115 series became the world’s first production five-cylinder diesel car. Its OM 617 engine was designed as a pre-chamber unit with 3-litre displacement; the power plant generated 59 kW (80 hp) at 4000 rpm and had a torque of 17.5 mkg at 2400 rpm.

With acceleration from 0 to 100 km/h in 19.9 seconds and a top speed of 148 km/h, the 240 D 3.0 took the field with these more than respectable performance figures for a compression-ignition engine. Indeed, upon its introduction the saloon proved to be the liveliest, fastest diesel car in the world. By 1974 five-cylinder diesel engines were already seeing use in trucks and as stationary engines. But an engine like this was an innovation in the passenger car. It enabled Mercedes-Benz to take the performance limit previously encountered by the passenger car’s four-cylinder diesel engines to an appreciably higher level.

Since a pneumatic shut-off was used instead of the mechanical device in the 2.4-litre engine, the unit now could be switched off using the ignition key. The engine of the 240 D 3.0 was also started by turning the ignition key, and not by pulling a lever as in the past – an advance that at the time spelled a clear-cut edge in terms of comfort. Compared with other diesel cars, the 240 D 3.0 scored very well with its refined smoothness and economy. Fuel consumption was 10.8 litres of diesel per 100 kilometres (21.75 mpg). And so this car blazed the trail for the future success of diesel-powered cars. Mercedes-Benz installed the five-cylinder diesel in other vehicles too, beginning for example in 1978 with the S-Class 300 SD (116 series) for export to North America, and the experimental C 111-IID.

1976: A classic bids farewell

In January 1976 Mercedes-Benz launched the 123 series, the successor to the "Stroke 8". Production of the 115/114 series did not cease immediately though, continuing for a full year until December 1976. The reason for this parallel production was the long delivery time for the new W 123 and the continued strong demand for the proven "Stroke 8". In particular taxi companies ordered saloons of this series once more for cab service. The taxi trade enjoyed an especially close relationship with this model series. As a popular cab the "Stroke 8" had gone along with the colour change in the German taxi landscape from black to light ivory (code RAL 1015), prescribed for new taxis in 1970.

The "Stroke 8" remained a favourite for many years not only with German taxi drivers. The Mercedes-Benz with the highest known recorded mileage in service is a Greek taxi, a 1976 240 D. Its owner, taxi driver Gregorios Sachinidis from Thessaloniki, covered 4.6 million kilometres in this car. Since 2004 the car belongs to the collection of the Stuttgart Mercedes-Benz Museum. Vehicles like the world-record taxi further underscore the reputation of the "Stroke 8" as an indestructible and reliable long-distance runner. The respect and acknowledgement voiced by the contemporaries of the "Stroke 8" can be heard to this day in the enthusiasm of the pre-vintage and vintage car community for the 115 and 114 series.

Technical pioneer and bestseller

The after-effects of the first independent model family of the intermediate range of Mercedes-Benz are reflected not only in well-cared-for classic cars: vehicles of the ESF (Experimental Safety Vehicle) series of Daimler-Benz Research, with which technologies like the anti-lock braking system (ABS) and the airbag were tested, were based on the "Stroke 8" – for example, the ESF 05 (1971) and the ESF 13 (1972). In this way the Stuttgart intermediate range assisted in the 1970s in developing elements of active safety for the cars of today. The "Stroke 8" thus became a trailblazer of future innovations in series production.

At the end of its production life, the engines of the "Stroke 8" family ranged from the entry-level models to the top-of-the-range models 280 E (1972) and 240 D 3.0 (1974). This variety was one key to the success of the "Stroke 8", which established itself as a versatile model capable of satisfying even the most demanding of drivers. All in all, from 1968 to 1976 almost two million units of the two series were produced. This almost equals the number of vehicles manufactured by Mercedes-Benz across all passenger car series of the brand from the end of the Second World War until 1968.

115/114 series in the press

auto motor and sport, Germany, issue 8/1968, wrote of the dimensions of the 115 and 114 series: "The proportion of exterior dimensions to boot and interior is much more reasonable in the new car. This is very much an advantage for parking – one can actually manage with the average parking spaces of Central European cities. The large boot is not just theory: with 510 kg permissible payload one can make full use of it."

auto motor and sport, Germany, issue 8/1968, on the passive safety of the "Stroke 8": "Today almost every car factory claims to build a particularly sturdy central compartment and progressively deformable front and rear sections, but it is fair to say that few can match the bodies of Mercedes cars for solidity and crashworthiness, and none can surpass them."

auto motor and sport, Germany, issue 8/1968, on the four-cylinder diesel models of the 115 series: "The great and enduring sales success of the diesels is based on their unrivalled thriftiness and their long life. These are things the diesel owner expects and gets."
auto motor and sport, Germany, issue 8/1968, on the quality of the 115 and 114 series: "Nothing about this car is 'cheap', and it draws attention to this fact every day with reliable operation."

auto motor and sport, Germany, issue 2/1975, wrote of the 240 D 3.0 model: "In practical operation the 'big' diesel distinguishes itself from the smaller four-cylinder models through noticeably more refined operation. Apart from distinctly better accelerating power, mainly at medium and higher engine speeds, it very obviously profits from the shorter firing intervals which result from the larger number of cylinders. In addition, there is also the impression of substantially reduced load alteration effects between the accelerating and decelerating engine."
auto motor and sport, Germany, issue 2/1975, sums up the driving dynamics of the 240 D 3.0: "Both on the motorway and on country roads, you can keep up with the fast cars without much effort in the 3.0 – you'll be overtaken fairly seldom now."

auto motor and sport, Germany, issue 2/1975, wrote of the engine noise of the five-cylinder diesel in the 240 D 3.0: "Of course, the astonishingly low noise generation of the five-cylinder is also important in terms of pleasant driving characteristics – from medium engine speeds upwards there is practically no difference to the comparable petrol engines."

mot, Germany, issue 17/1970, wrote of the 200 D and 220 D models: "They are the technically most impressive diesel models, but also the most expensive." auto motor and sport, Germany, issue 15/1974, presented the new 240 D 3.0: "For the first time the unusual number of five cylinders has been chosen for a car engine, so that, starting from the 2.4-litre engine, the desired increase in displacement to 3 litres was achieved not by the conventional method of modifying the bore and stroke, but by adding another cylinder."




















































Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART VII


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Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART VIII



OFFICIAL PRESS RELEASE

Stuttgart, Germany, Aug 01, 2008

Effortless superiority: 123 series (1975 to 1985)

* Mercedes-Benz introduces the brand’s first station wagon in 1977

* The coupe is even produced in a diesel version

* Testing of alternative drive concepts


In January 1976 Mercedes-Benz introduced the 123 series saloon. It stepped out into the limelight for the first time with all the poise and assurance of being best in class. Classic body lines placed this new Mercedes-Benz in the tradition of its predecessor (W 115/114); they gave the new car modern elegance, a spirited but dignified look, and natural authority. This was no automotive revolutionary strutting out before the public, but a completely mature car of the upper mid-size category in which up-to-date technology and tried-and-tested engineering merged with the brand values. Much as expected, experts and customers alike gave the model a very warm welcome.

In various ways the design of the W 123 pointed towards the future: technically, with numerous innovations in the area of safety; and aesthetically, with a design that took its cue from the looks of the new S-Class W 116 and the current R/C 107 SL models. Expressions of this were the horizontally configured headlamps, for example, instead of the previous classic vertical lamps. The W 123 impressed with the high standard of its workmanship, its functionality, and its particularly wide range of body variants and engines. From 1977 this model series included the first production station wagon manufactured in-house by Mercedes-Benz.

Gains in safety and comfort

Greater safety, improved comfort and better serviceability: these were the demands made of the Mercedes-Benz design engineers when the specifications for the new model series were drawn up in 1968. Almost eight years later it was apparent that the experts from Stuttgart had accomplished their task in a convincing manner. It was precisely the high level of safety engineering and the mature overall design that secured this model the attention of the trade press and the customers from the very beginning.

The formulation of the specifications book laid the foundation for developing the future intermediate class model. In the years that followed, new design sketches were repeatedly thrown into the ring, demonstrating just how large the spectrum of possibilities for the design of the new Mercedes-Benz was: attempts at gentle renewal of the existing model series stood at one end of the spectrum of the studies; at the other, futuristic visions with sharp edges, roofs with huge overhangs at the back, steep rear windows and massive rubber bulges around the body. But the boldest designs remained in cold storage. By 1973 the shape of the W 123 was known for the most part; work merely had to be done on the detail. Preliminary prototypes were under way by 1974. The vehicle safety test series began with impact tests in the summer of 1974. In 1975 comprehensive winter testing in Sweden was on the agenda.

In developing the new model the design engineers set particular store on an even higher level of safety for the occupants. This was a topic of increasing debate in the 1970s and resulted in new regulations. On January 1, 1976, the Federal Republic of Germany made the wearing of seat belts for front seat passengers compulsory. In keeping with this trend, vehicle development focused on restraint systems and passenger compartments designed to minimise sources of injury. The engineers also considered integrating airbags, but these were not installed until 1982 as an optional extra in the W 123.

1975: Brilliant premiere

Perfect preparation was the slogan prior to the start of series production. For the first time at Mercedes-Benz a so-called pilot line was set up to build the W 123. On this training line, equipped similar to the future production facilities, workers practiced assembling the W 123. In all, 16 cars were produced there in summer 1975.
The meticulous preparation paid off, for the new model got a resounding reception from the public. Soon after presentation of the W 123 the first year's output was sold out; in 1976 young used cars of the series often fetched the price of a new car. Because of the long delivery times, among other reasons, Mercedes-Benz continued to build the "Stroke 8" for a whole year parallel to the new model. Taxi drivers, in particular, important customers in the intermediate range, had pressed for this offer.

Innovations and tried-and-tested technology

In technical terms the 123 series was an entirely new design, but was modelled both on its predecessor (W 115/114) and the new S-Class of 1972 (W 116). From the "Stroke 8" series the new model adopted in particular the engines, though with one exception: the newly designed 2.5-litre six-cylinder engine of the Mercedes-Benz 250 (M 123). Other features borrowed from the S-Class included the double-wishbone front suspension, in which the steering swivel axes of the wheels were aligned so that their imaginary extension coincided with the contact patch of the tyre on the roadway. This neutral setting (zero scrub radius) ensured that the wheels would not be deflected inwards or outwards during braking. The double-wishbone front suspension meant the elimination of the subframe, which had been introduced in the "Ponton" and presented the engine, transmission and front suspension as a unified whole. At the rear of the W 123 was a diagonal swing axle, which had proven its value in the W 115/114.

Occupant safety was served particularly by the combination of an even sturdier passenger compartment with large crumple zones: the front and rear ends of the vehicles were designed for controlled deformation in a collision to absorb appreciably more impact energy than was the case in earlier designs. The central section of the body, the so-called safety cell (patented in 1951 as "shape-retaining occupant compartment surrounded by energy absorbing zones at the front and rear"), had even more stability owing to the incorporation of stronger box sections in the roof frame and the six roof pillars. Stronger door beams ensured better impact protection.

The steering column of the 123 series was also optimised with a view to the driver's safety: a corrugated tube connected the jacket and the steering gear with each other. In an accident, the corrugated tube could buckle in different directions. This reduced the danger of the steering column penetrating into the passenger compartment (lance effect). This and the rigid passenger compartment with crumple zones were inventions of Béla Barényi, the pioneer of passive vehicle safety at Mercedes-Benz. Installation in the W 123 marked the premiere of the safety steering column, patented in 1963, as a complete system.

1976: Intermediate class with new face

When Mercedes-Benz put the new intermediate class saloon on the market in 1976, its place in the current Stuttgart model generation was recognisable at a single glance. Like the S-Class W 116 and the new SL of the 107 series, the W 123 had horizontal headlamps instead of the upright configuration of earlier days. The great majority of models illuminated the roadway with round headlamps in pairs behind a common rectangular lens. In 1976 this was the first hint of the "four-eyed" face of the 1995 E-Class (W 210) and its successor of 2002 (W 211). Only the top-of-the-range versions 280 and 280 E had rectangular halogen wide-band headlamps at the premiere of the W 123. In the 1982 facelift these rectangular lamps were then introduced for all versions and all body variants.

The lines of the saloon, from which the other body variants derived, impressed in 1976 by integrating up-to-date elements while paying regard to the established concept: draft designs during the planning period had put forward many variations for consideration, but neither the large roof-level rear spoilers nor the fastback concepts got beyond the drawing board. At the premiere of the new model the W 123 was offered not only as a saloon, but as a chassis too, in keeping with Mercedes-Benz tradition. Mainly Binz (Lorch) and Miesen (Bonn) built ambulances on this basis; hearses were created by Pollmann (Bremen), Rappold (Wülfrath), Stolle (Hanover) and Welsch (Mayen). The chassis with standard wheelbase (2.80 metres) was given the series number F 123 and were initially offered as the 240 D and 230. The extended chassis with a wheelbase of 3.43 metres (VF 123) was initially available for the 240 D, 300 D and 250.

Four or six cylinders?

The creators of the W 123 also fell back on proven technology for the engines. Solely the new 2.5-litre six-cylinder M 123 in model 250 (95 kW/129 hp) was newly developed for the premiere. The other eight models of the first year featured engines which already had powered the "Stroke 8": the in-line four-cylinder M 115 was used in the 200 (69 kW/94 hp) and 230 (80 kW/109 hp); the top-of-the-range 280 (115 kW/156 hp) and 280 E (130 kW/177 hp) models were amply powered by the M 110 in-line six-cylinder (as carburettor and injection engines). The diesel variants 200 D (40 kW/55 hp), 220 D (44 kW/60 hp) and 240 D (48 kW/65) featured the four-cylinder engine OM 615; the 300 D (59 kW/80 hp) was powered by the five-cylinder OM 617.

As early as 1978 Mercedes-Benz thoroughly revised this engine range. Up to the termination of the 123 series the power of the individual models increased owing to improved drive units. The 200 (now with 80 kW/109 hp) even got a new engine, the M 102, in 1980. This engine was also fitted as an injection unit in the 100 kW (136 hp) 230 E. An outstanding new power plant was the turbocharged five-cylinder diesel OM 617, which was included in the series in 1981 for the 300 D Turbodiesel (92 kW/125 hp). In the United States this turbocharged compression-ignition engine was offered in all body variants; in Germany, however, the 300 D Turbodiesel was available solely as a station wagon.

1977: Three new variants in one year

Enthusiasm for the W 123 increased further in 1977. This was the year in which Mercedes-Benz presented three additional body variants: the coupe, the long-wheelbase saloon, and for the first time in the brand’s history a factory-built station wagon. By expanding its model range the brand forcefully demonstrated the versatility of the new model series. Compared with its predecessor, the coupe was much more independent in its design than the saloon. And the station wagon inaugurated an entirely new body variant in series production at Mercedes-Benz.

In March 1977 the coupe caused excitement at the International Motor Show in Geneva. Whereas the coupes of the "Stroke 8" series very closely followed the styling of the saloon, the new models 230 C, 280 C and 280 CE were distinctly more autonomous in character. Particularly the wheelbase, 8.5 centimetres shorter than that of the four-door version, in interplay with the lower roof and the sharply raked windscreen and backlight, gave the car a stockier, sportier look. The developers also improved the vehicle safety: a stiffened roof frame structure with high-strength roof pillars and reinforced doors resulted in an even sturdier safety passenger cell. The C 123 also profited fundamentally from the body design of the saloon, with its front and rear crumple zones designed for controlled deformability. The coupe also shared the suspension (diagonal swing rear axle and double-wishbone front suspension with zero scrub radius) and brake system with the four-door cars.

The appointments of the two-door versions were on a level with those of the top-of-the-range 280 and 280 E saloons. For all three coupe models this included wide-band headlamps, chromed air inlet grilles in front of the windscreen and chrome strips under the taillights. Accordingly, the facelift of September 1982 did not have as much of an impact on the coupes as it did on the saloons. After all, the coupes had always had the wide-band headlamps that were now introduced for all models. The new coupes were best recognised by the air inlet grilles in front of the windscreen, which were painted black from 1982 on.

Compression-ignition engine for the coupe

At production start-up there were three versions with petrol engine: the four-cylinder coupe 230 C (80 kW/109 hp), and the two six-cylinder versions 280 C (115 kW/156 hp) and 280 CE (130 kW/177 hp). A diesel-powered coupe, the 300 CD (59 kW/80 hp), was added in autumn 1977, but this was produced exclusively for the US market. The diesel initiative in the elegant guise of the coupe pursued the aim of reducing the corporate average fuel economy (CAFE) of Mercedes-Benz automobiles in the North American market. CAFE describes the average fuel consumption of all models of a brand. The economical diesel engines permitted Mercedes-Benz to distinctly improve its CAFE score. When CAFE standards were further tightened, the 300 CD was replaced in 1981 by the 300 CD Turbodiesel. This coupe with its 92 kW (125 hp) output was not offered on the European market either, but superseded the 280 CE in the USA.
In 1980 the new 230 CE replaced the 230 C Coupe. The 230 CE's M 102 engine with mechanically controlled petrol injection delivered 100 kW (136 hp). Mercedes-Benz also supplied the coupe with ABS as an optional extra, and – as of 1982 – with airbag. In August 1985 series production of the C 123 ceased. A total of 99,884 units of this model type were manufactured from 1977 to 1985, including 15,509 with diesel engine. In the first few months of its existence, particularly the long waits testified to customers' enthusiasm for the new coupe. Customers ordering in 1977 sometimes had to wait over two years for their cars.

1977: Long-wheelbase saloon

In August 1977 Mercedes-Benz introduced the long-wheelbase version of the intermediate class saloon: the wheelbase of the V 123 (3.43 metres) was 63 centimetres longer than that of the saloon (2.80 metres). That provided enough space for a third seat bench and made the car a comfortable taxi, company car or hotel limo for seven passengers. The 250, 240 D and 300 D models were offered with long wheelbase and had the same engines as in the W 123. Whereas the "tailfin" eight-seater saloon was limited to one very economical diesel engine (200 D long), the 123 series with three powerful versions of the long-wheelbase saloon followed the trend set by the "Stroke 8".

Despite its imposing proportions and powerful engines, the long-wheelbase saloon was not mainly intended as a representational vehicle. An indication of this was that the diesel engines were still in the majority as against the petrol engine of the 250 model. Rather, this body variant served as a sophisticated touring car for several passengers. Operating for hotels and trade fair companies and as a large-capacity taxi, the V 123 impressed with its high degree of ride comfort and great spaciousness. Many characteristics of this body variant were adopted by well-equipped vans.

1977: Station wagon model introduced at the Frankfurt Motor Show

A station wagon is a combination of passenger car and delivery van. Such vehicles have been available with the Mercedes star on the bonnet for several model generations. However, the cars were not built in Sindelfingen, but were the work of specialists: from 1953 on Lueg (Bochum) supplied the 170 V as a pack mule; in the late 1960s Binz (Lorch) even made a station wagon out of the sophisticated W 186. Versions of the "Ponton", the "Tailfin" and the "Stroke 8" followed (in each case by Binz and Miesen). In particular, the solutions for the W 115, which adopted the C-pillar without modification from the saloon, were considered questionable products of styling.

But these practical body variants with the large load space were not completely new to the Stuttgart engineers and designers. At first, under the name "Universal" Mercedes-Benz marketed the small "tailfin" as a station wagon model built by the Belgian manufacturer IMA. And the station wagon variant of the "Stroke 8", which had been developed to production standard, showed what an attractive load carrier should look like, even if in the end it was not manufactured in series. During the design phase of the W 123 there were still reservations about a station wagon as a fully-fledged member of the model family. The reason for this negative attitude was mainly to do with the reputation station wagons had at the time. The critics warned that this body type was too reminiscent of industry and the trades. They felt this was incompatible with the claim staked by a car in the Mercedes-Benz upper mid-range.

On the other hand, market research conducted during development of the concept for the 123 series showed there to be a definite demand for a sporty, luxurious five-door from quite a different segment of the market: the station wagon was well on its way to becoming a family and leisure car. The Board of Management realised this too and gave the go-ahead for the project in 1975. In the German market, though, the new Mercedes would not bear the typical German name for a station wagon, Kombi, and in 1975 the former designation Universal also failed to gain approval. At first the designation Stationswagen was considered meaning that instead of "250 K" or "250 U" the small six-cylinder variant with the load compartment would get the label "250 St" on the tailgate. Finally, it was decided that the suffix "T" should indicate the new variant, the letter standing for Tourism and Transport. The unusually high demand following its presentation at the Frankfurt International Motor Show (IAA) also suggested it stood for "Trend". Only the internal series designation still recalled the term Stationswagen: the station wagon model was coded S 123.

Station wagon: the sporty, elegant, spatial miracle

Series production of the station wagon commenced at the Bremen plant in April 1978. Technically the vehicle conformed to the saloon: drive system, brakes and suspension were identical, as were the exterior dimensions (length, width and wheelbase). But the rear end, with the high trailing edge of the roof and the low sill of the load compartment, made the new model variant a true spatial miracle. Even when the standard seats were occupied by the driver and as many as four passengers, the station wagon still offered 523 litres of space for loading up to the window line. And with the rear seat bench folded down, the load compartment capacity was 879 litres up to the window line. The concept additionally offered a number of options for flexible configuration of the interior. As an optional extra, the rear seat bench could be supplied with an asymmetric split. As required, one third or two thirds of the backrest could then be folded down. Additional folding seats facing the rear of the vehicle and stored in the load compartment floor were also available on demand. These features made for particularly flexible stowage space – appropriate for a well-appointed vehicle for family and sports, tourism and transport.

Automatic hydropneumatic level control made for a high degree of ride comfort irrespective of the load carried. This could be as much as 45 percent of the station wagon’s kerb weight, which tipped the scales at 1500 kilograms. As an optional extra, the station wagon could be equipped with 15-inch wheels, alternative springs and shock absorbers, and a stronger brake booster, in which case the safe load capacity of the station wagon rose from the standard 560 kilograms to 700 kilograms. Further options included a child bench seat in the load area and chromed roof rails. The rails became standard equipment in the summer of 1978. All station wagon models were fitted with carpeting throughout, i.e. in the cargo area too. Unlike in the station wagons of other manufacturers, different materials were not used in order to distinguish between passenger and cargo areas.

The new body variant was initially offered as the 230 T, 250 T and 280 TE, as well as the 240 TD and 300 TD. For all models light-alloy wheels were available as an optional extra, but only the 280 TE had rectangular headlamps. The station wagon was built in Bremen. Only the models shown in Frankfurt and the first 100 vehicles of the series were produced in Sindelfingen. Seventy workers from the Bremen plant came to Sindelfingen for intensive training in the production of the new station wagon series, during which time 40 specialists from the parent plant of the W 123 put finishing touches to the production facilities for the station wagon in North Germany. Such painstaking preparations were largely responsible for the tributes that would later by heaped on the S 123 for its precision craftsmanship.

Turbodiesel premiere and facelift for the 123 series

During production of the W 123, the output of various models was improved on several occasions and new models were added. In 1980 the new M 102 engine superseded the old M 115; in the 200 model the new four-cylinder developed 80 kW (109 hp) as a carburettor engine; in the 230 E that replaced the old 230, the in-line four-cylinder managed 100 kW (136 hp) with petrol injection.

In October 1980 Mercedes-Benz presented a car with a turbocharged diesel engine for the first time in Germany. The 92 kW (125 hp) 300 TD Turbodiesel had the same engine as the 300 D Turbodiesel Saloon and the 300 CD Turbodiesel Coupe, both of which were built exclusively for the US market. At its 1980 launch, with a basic price of DM 37,200 the Turbodiesel was almost the most expensive production model of the 123 series. Only the 280 CE Coupe cost more (basic price DM 100 higher). Appropriately enough, the car with the turbocharged diesel power plant had the more upscale appointments, including rectangular wide-band headlamps and chromed air inlet grilles in front of the windscreen.

In September 1982 a previous distinguishing feature of the smaller models of the 123 series, the round twin headlamps, was discontinued. All models of the 123 series were equipped with the rectangular wide-band headlamps familiar from the 280 and 280 E as part of an extensive model refinement package. The numerous other improvements included changed wind-deflecting mouldings on the A-pillars and power steering as standard.

Versatile: special versions of the 123 series

The W 123 often served as a basis for different bodies and conversions. For the purposes of the police, fire and rescue services there were modified saloons and station wagons. Companies like Binz and Miesen built ambulances on chassis. Other bodies and conversions – hearse, pickup, convertible, etc. – were created by outside bodybuilding firms. Finally, for taxi operation Mercedes-Benz offered the saloon, the station wagon and the long-wheelbase saloon ex factory with the appropriate specifications.

Various specially tuned versions of the 123 series were offered during its production life by companies like AMG, Brabus or Lorinser. The measures ranged from optical changes to the body with the help of paint, side skirts and various light-alloy wheels to modifications of the suspension for lowering the body, tauter damping, and camber changes on both axles. Other possibilities for sports-related improvement included optimisation programmes for production engines or the installation of more powerful engines.

W 123 and alternative drive systems

Mercedes-Benz began looking into alternative drive technologies at a very early stage. This purpose was repeatedly served by 123 series vehicles used by the engineers as test mules. In 1983 Mercedes-Benz presented a 280 TE with hydrogen drive. There was also a test vehicle with electric drive based on the station wagon. And from 1982 on there was even a 200 with bi-valent drive available as a production vehicle: the car operated on liquid gas or petrol, the driver choosing the mode by means of a switch.

From volume model to classic

Production of the saloon ceased in November 1985. As with the transition from "Stroke 8" to W 123, the new 124 series was built parallel to the old model for almost a year. Mercedes-Benz did not take the particularly successful station wagon models of the 123 series out of production until January 1986. Production of the 123 series ran from 1975 to 1986, with a total of just under 2.7 million vehicles being built. At 2,375,440 units, saloons made up the lion's share; but the new station wagon accounted for an impressive 199,517 units. The remainder was made up of 99,884 coupes, 13,700 long-wheelbase saloons, and finally 8,373 chassis for special-purpose bodies. Around 1,080,000 cars of the series were exported.

During ten years of production, the diesel-engined models proved the most successful: the top favourite among buyers was the 240 D (448,986 saloons, 38,903 station wagons, 3841 long-wheelbase saloons and 1953 chassis for a total of 493,683 units). The most successful petrol-engined model was the 230 E (245,588 saloons, 42,284 station wagons, 29,858 coupes and 294 chassis, giving a total of 318,024 units). Ranked according to body variants, the best-selling saloon was the 240 D (448,986 units), the 230 TE (42,284 units) proved to be the most popular station wagon, and in the coupe segment the 280 CE (32,138 cars) took the honours. The 250 led among the long-wheelbase saloons (5,180 units) and long-wheelbase chassis (2,888), the 240 D among the chassis with standard wheelbase (794 units).

Many years after the end of production the 123 series was still a familiar sight on the roads. But today this generation of
Mercedes-Benz upper mid-range has become something of a rarity and its models are rapidly establishing themselves as recent classics; the coupe, in particular, is one of the most coveted cars on the youngtimer scene.

123 series in the press

auto motor and sport, Germany, issue 14/1978, welcomed and commended the new 123 series station wagon: "Having experienced the station wagon, it is clear it will be a desirable alternative to the saloon."


































































Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART VIII


M
 
Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART IX



OFFICIAL PRESS RELEASE

Stuttgart, Germany, Aug 01, 2008

The first E-Class: 124 series (1984 to 1996)

* From 1993 the intermediate car range of Mercedes-Benz is called the E-Class

* The 4MATIC arrives – all-wheel-drive culture on a
Mercedes-Benz level

* A four-seater cabriolet enriches the model line-up


In November 1984, Mercedes-Benz presented the eagerly awaited new saloon in the intermediate class. The new 124 series was launched with the 200 D, 250 D, 300 D, 200, 230 E, 260 E and 300 E models. In addition, the 200 E was built for export to Italy. This car family would be the first in the history of the Stuttgartbrand to be called the E-Class. The successor to the 123 series was still being referred to as the "mid-size Mercedes class". This reflected the era of the strategic model initiative in the Mercedes-Benz product range, which had seen the addition once again of a 190 model (W 201) in 1982. As a forerunner of the C-Class, however, this model was positioned beneath the E-Class in a market segment which Mercedes-Benz designated the compact class.

The W 124 adopted elements of this young, sporty, compact automobile, but set standards all its own for design and engineering. There were parallels to the compact class, for instance, in the use of high-strength sheet steel and other weight-reducing materials. Despite lightweight design, the Mercedes engineers further improved vehicle safety, with the W 201 and W 126 S-Class serving as benchmarks. The passenger compartment of the 124 series excelled with high side-impact and rollover resistance and was provided with well thought-out deformation zones at front and rear ends. The criterion of the asymmetric frontal impact with 40 percent overlap at 55 km/h was now also met by the saloons of the intermediate range. In addition, potential contact zones were designed to yield on impact for the protection of pedestrians and cyclists.

Individualist with family styling features

The design of the W 124 showed a certain family likeness to the compact class. But on the whole the new model series presented itself with original independent design elements that served functional purposes. Bruno Sacco, Joseph Gallitzendörfer and Peter Pfeiffer were responsible for the design. The characteristic rear end, for example, which tapered towards the rear and was strongly rounded on the upper edges of the sides, had a particularly beneficial effect on wind resistance and was the product of wind tunnel testing. Such aerodynamic improvements distinctly reduced fuel consumption over the predecessor model. Two other typical design features are the trapezoidal boot lid, with rear edge pulled right down, and the slanting inside edges of the almost square taillights. This permitted a particularly low load sill for the large boot.

One design detail that is initially not very conspicuous, but nonetheless remarkably innovative, was the single-arm eccentric-sweep windscreen wiper. This wiped 86 percent of the windscreen – the largest swept area of any car in the world when the W 124 was introduced. Owing to a lifting motion superimposed on the rotary motion, the upper corners of the windscreen could be wiped much more efficiently than with a conventional single-arm wiper. Electrically heated windscreen washer nozzles were standard equipment on all models in the series.

The days of the distinct differences between powerful six-cylinder models and moderately powered four-cylinder variants came to an end in 1984. This was shown by the appointments of the W 124: The exteriors of all models in the series were virtually identical. The only differences concerned the silencer at the rear – the six-cylinder models had twin tailpipes, and the front apron, which featured louvre-like air inlet slots in the 300 D and models with air conditioners.

Chassis and engines

The familiar front and rear suspension designs from the C-Class ensured outstanding handling properties. This was a shock absorber strut independent front suspension with anti-dive control, located by individual wishbones, and a multi-link independent rear suspension in which each rear wheel was located by five separate links.

Many of the engines of the 124 series were newly developed by the engineers. For instance, the M 103 six-cylinder injection engines with 2.6 and three litres displacement in models 260 E (125 kW/170 hp) and 300 E (140 kW/190 hp) were completely new designs. All three compression-ignition engines of the 124 series were members of the new diesel engine generation. The OM 601 of the 200 D model (53 kW/72 hp) ran with the same output in the 190 D of the compact class. New engines in the 124 series were the five-cylinder OM 602 with 2.5-litre displacement in the 250 D (66 kW/90 hp) and the 3-litre six-cylinder OM 603 in the 300 D (80 kW/109 hp). The four-cylinder power plants of the Mercedes-Benz 200 (80 kW/109 hp) and 230 E (100 kW/136 hp) were engines from the preceding 123 series and belonged to the M 102 engine family, from which the engine of the 200 E also came.

1985: The second station wagon generation

The history of the 124 series is characterised by a previously unattained variety of models, body shapes and innovations. The launch of the S 124 station wagon model in September 1985 at the Frankfurt International Motor Show (IAA) marked an important step. This second generation of sporty lifestyle station wagon from Mercedes-Benz conformed to a large extent to the engineering and styling of the saloons. Apart from a modified design of the rear end and resultant changes there were no differences to the body. The major components, brakes and suspension were merely adapted to the higher payload, but otherwise taken practically unchanged from the saloons. The station wagons featured a multi-link independent rear suspension, but now combined as standard with hydropneumatic level control and a shock absorber strut independent front suspension.

The engineers also incorporated the safety standards of the saloons into the station wagon models as far as possible. The latest findings of safety research were applied to the development of the rear body overhang, a particularly critical area where station wagon cars are concerned. One example of this was the fuel tank, which in the station wagon was mounted for structural reasons under the vehicle floor. It was given a special shape with sloping stop faces on the tank upper side and the vehicle floor. This ensured that in a rear-end crash involving deformation of the side members the tank would be pushed downwards and away and be held by check straps so that it would not come in contact with the roadway.

Very many common engines

The close relationship between saloon and station wagon was also evident in the engines. The original station wagon range comprised eight models whose engines were all used in the saloons, with one exception: the engineers developed the 105 kW (143 hp) OM 603 A, the 3-litre six-cylinder turbodiesel of the 300 TD TURBO, from the saloon's naturally aspirated engine. In a modified form the turbocharged compression-ignition engine was also used in the S-Class export model, the 300 SDL. On the other hand, the 2.6-litre petrol engine and the 3-litre naturally aspirated diesel engine of the saloon were not in the station wagon version’s engine line-up at its debut.

As was usual for decades in the intermediate range of Mercedes-Benz, the 124 model series also was available as a partially bodied chassis. These were made into ambulances, station wagons or other special body versions by domestic and foreign bodybuilders. One innovation, however, was that for the first time these chassis were based on the station wagons and were manufactured with them in Bremen. Along with the standard-wheelbase versions, available as 250 D and 230 E, additionally there was again a long-wheelbase version offered as the 250 D, 230 E and 260 E models. Ambulance bodies on these chassis originated mainly at Binz in Lorch, Miesen in Bonn and Visser in Leeuwarden, Netherlands. The best-known manufacturers of 124-based hearses were bodybuilders Pollmann in Bremen, Rappold in Wülfrath, Stolle in Hanover and Welsch in Mayen.

1985: 4MATIC is all-wheel drive culture at Mercedes-Benz level

Simultaneously with the station wagon models, Stuttgart introduced the automatically engaged 4MATIC four-wheel drive as part of their "Mercedes-Benz Driving Dynamics Concept". This all-wheel-drive system was available for the six-cylinder models of series 124. Along with the complex control electronics, 4MATIC comprised an additional complete front-wheel drive with transfer case and differential; for space reasons, the latter is integrated into the oil sump in the engine compartment.

The great technical complexity of this perfected traction system was reflected in the selling price: the 260 E 4MATIC, 300 E 4MATIC, 300 TE 4MATIC, 300 D 4MATIC and 300 TD TURBO 4MATIC, delivery of which began in 1987, cost almost DM 12,000 more than their rear-wheel-drive counterparts. In addition to the automatically engaged 4MATIC four-wheel drive, the "Mercedes-Benz Driving Dynamics Concept" included the automatic locking differential (ASD) and the anti-skid control (ASR). So in this package Mercedes-Benz offered three graduated automatic electronic driving dynamics system, all of which used signals from the anti-lock braking system.

1986: Catalytic converter as standard on all Mercedes cars

As early as September 1985, a closed-loop emission control system with three-way catalytic converter was available as an optional extra on all petrol-engined models of the series except the carburettor-equipped 200 model. Alternatively a so-called catalyst retrofit version was available, in which the vehicle was provided without catalytic converter and oxygen sensor, but with multifunctional mixture preparation and ignition system (MF system). This permitted retrofitting a vehicle with a closed-loop catalytic converter at any time and without any problems. This arrangement gave the customer the greatest possible flexibility in determining the time of conversion. In the 1980s that was a considerable advantage as the supply of unleaded fuel was not yet guaranteed everywhere. The six-cylinder models were delivered in the catalyst retrofit version as standard. Their output was slightly reduced by the change to the MF system. In the 230 E the catalyst retrofit option was initially only available as an extra.

From September 1986 onwards, the carburettor model was also available with emission control system. At that point the closed-loop catalytic converter became standard equipment for all Mercedes-Benz passenger car models with petrol engines. The retrofit vehicles were now only available as an optional extra (with an appropriate reduction in price). This offer was discontinued in August 1989.

1987: Advent of the coupe

In 1987 Mercedes-Benz extended the model range of the 124 series once again. First, two coupe models made their debut in March at the Geneva Motor Show, rounding off the range as a third body variant. As with the 123 series, in terms of engineering and styling the design was closely related to that of the saloon. However, the floor assembly of the four-door was changed so that the coupe had an 8.5 centimetre shorter wheelbase. This emphasised the sporty character of the two-door and made it a body variant in its own right, both structurally and in terms of styling. Commonalities with the saloon were reduced to the front end and the taillights.

The safety standard achieved in the 124 series saloons was also adopted by the engineers for the coupes. The lack of B-pillars was compensated by reinforced A-pillars, rocker panels and doors, as well as a particularly large proportion of high-strength steel panels. The design engineers trod new paths in designing the end section of the roof: The interior panelling of the roof was extended slightly over the backlight, benefiting the safety and comfort of back seat passengers: in dangerous situations neither the edge of the panel nor the edge of the window were close to the head. And since the roof did not begin its downward slope until well towards the rear, despite the coupe shape, the passengers in the rear had much more headroom than was customary in a coupe. The overlapping area was visually camouflaged by a dark pattern on the backlight.

Distinctive design highlights

A characteristic design element that documented the independence of the coupe design over other series variants were the rub strips combined with integral side skirts. Between the wheel cut-outs at bumper level they created an optical link between front and rear apron and, like the aprons, were painted in contrasting metallic colours.
Initially the model range comprised the 230 CE and 300 CE. Their engines, a 2.3-litre four-cylinder and a 3-litre six-cylinder with mechanically/electronically controlled petrol injection, were the same as those for the respective saloon models. The mechanical components of the coupes and their four-door counterparts were in any case identical. On the outside, the 230 CE and 300 CE could only be told apart by the twin tailpipe of the six-cylinder and the model plate.

Further diversification

The International Motor Show (IAA) in Frankfurt/Main in September 1987 saw the arrival of two new saloons, the 300 D Turbo and 300 D Turbo 4MATIC. Both featured the turbodiesel unit that had been presented two years earlier in the corresponding station wagon models. Only the 4MATIC version was completely new and unique, since the 300 D Turbo with its conventional drive had been a part of the sales range of the American sales company, MBNA, since April 1986. The turbodiesels were outwardly distinguished from the other models of the series by five additional air intake louvres in the front right wing.

Two further models followed at the Paris Motor Show in September 1988. However, the 200 E with its proven 2-litre injection engine from the 190 E was not a genuine premiere. It was a model that had been built for the Italian market for a number of years. The 250 D Turbo on the other hand had been created by resorting to the modular engine range. Basically it was the equivalent of the 250 D, but powered by a modified version of the turbocharged 2.5-litre diesel engine already used in the compact class.

1988: Cleaner turbodiesels

The changes made from September 1988 in the turbocharged 2.5-litre diesel engine, and simultaneously in the 3-litre turbodiesel, emphasised the reduction of particulate emissions through improvements to the combustion process. This objective was achieved by using a newly designed prechamber featuring oblique fuel injection, which ensured more efficient combustion. A fortunate side effect of the new diesel technology was a 2.9 kW (4 hp) increase in the output of both engines. In outward appearance, the 250 D Turbo conformed to the sister model with 3-litre engine in having additional air inlets.

In September 1988, all models of the series had their standard equipment extended to include anti-lock braking system ABS and a heated right exterior mirror. Here the windscreen washing system adopted from the S-Class was fitted with a heated washer reservoir and heated nozzles and hoses.

1989: The Diesel '89 initiative

As part of the "Diesel '89" initiative, in February 1989 the non-turbocharged diesel cars were also equipped with revised engines and the new oblique injection prechambers. In the naturally aspirated engines, too, the new diesel technology resulted in an increase in output, 2.2 kW (3 hp) in the 200 D and 2.9 kW (4 hp) in the 250 D and 300 D. In addition, the injection pumps of all naturally aspirated diesel engines got an altitude correction unit to minimise emissions in operation at higher altitudes. The improved models, whose particulate emissions declined by 40 percent, met the stringent particulate limits applicable in the USA even without a particulate trap and operated almost entirely smoke-free. Pollutant emissions were reduced still further with the aid of a complex emission control system, in which an oxidising catalytic converter specifically developed for diesel engines was combined with a carefully coordinated exhaust gas recirculation function. This very efficient system was available as an optional extra from October 1990 for diesel cars with naturally aspirated engines, and six months later for the models with turbocharged engines.

1989: Facelift for the intermediate class

In September 1989 at the IAA Frankfurt Motor Show, Mercedes-Benz showed a completely revised intermediate class model range. The model refinements focused on changes to the styling of the body and the redesign of the interior. The most conspicuous features of the facelifted models were the side rub strips with integral side skirts, which the coupe models had received in similar form two-and-a-half years earlier. At the upper edges of the side skirts, narrow polished stainless steel trim strips were now additionally fitted and continued along the tops of the front and rear aprons. In a discreet form they brought back that often missed touch of sparkling chrome after a long absence. They were complemented by chrome trim elements on the door handles and modified wheel embellishers, in which the Mercedes star and a narrow trim ring on the circumference were also chrome-plated. Another new feature was the exterior mirror housing painted the colour of the car. The interior also presented itself in a new design offering improved front and rear seats and numerous detailed improvements.

For all 124 series models with the exception of the 4MATIC variants, from September onwards the Sportline package familiar from the compact class models was also available as an optional extra. External features were the sports suspension with wide-base tyres size 205/60 R 15 on 7 J x 15 light-alloy or steel rims and a distinctly lower-slung body. The other appointments of the package included stiffer springs and shock absorbers along with modified interior appointments with a leather-covered steering wheel and gearshift lever, as well as individual front and rear seats.

Four-valves-per-cylinder technology in the 124 series

The revised 124 series also offered five entirely new models. For the saloon, coupe and station wagon there was now a four-valve-per-cylinder 3-litre six-cylinder engine. The unit came from the 300 SL-24 sports car. Owing to different installation conditions in the 300 E-24, 300 CE-24 and 300 TE-24, however, it was not possible to use the same catalytic converter cross-section as in the SL. For this reason the rated output of 162 kW (220 hp) was 8.1 kW (11 hp) lower than in the sports car (170 kW/231 hp).

Along with these new top-of-the-range models, in Frankfurt the Stuttgart company introduced a long-wheelbase saloon as fourth body variant of the intermediate class. After a hiatus of four years, a long-wheelbase version was again part of the sales range. The long body was developed in close cooperation with the Binz company in Lorch, which also carried out the work on the bodyshell during series production. The wheelbase grew by 80 centimetres to 3.60 metres, the overall length increasing by the same amount. In contrast to the predecessor models the 250 D long and 260 E long had six doors and a fully-fledged middle seat bench, whose seat depth and backrest height practically matched those of the rear seat row. Series production of the long-wheelbase saloons began in May 1990.

1990: The 500 E sets standards for the V8

At the Paris Motor Show in October 1990, the 500 E, the new top-of-the-range model in the 124 series, took to the stage. From the outside, it could not be distinguished from its sister models at first glance. But its "inner values" were all the more impressive: the newcomer had a 240 kW (326 hp) 5-litre V8 engine with four valves per combustion chamber which was based on the proven power plant of the 500 SL and enabled truly breathtaking performance. With the four-speed automatic transmission as standard, the saloon reached the 100 km/h mark in 5.9 seconds from a standing start. Its top speed was automatically governed at 250 km/h. The anti-skid control ASR fitted as standard prevented the drive wheels from spinning even at full throttle.
To improve the vehicle’s emission characteristics the volume of the double catalytic converter was increased from 3.9 to 5.8 litres; secondary air injection and exhaust gas recirculation enhanced emission control. The 500 E marked the first use of a new variant of the V8 four-valve engine, which differed from the version in the SL by having a different injection system as well as a modified crankcase. Instead of using the mechanical-electronically controlled Bosch KE-Jetronic system, the engine designers relied for the first time on the electronically controlled Bosch LH-Jetronic, featuring air flow measurement. The changes to the engine block were of a more profound nature. It now had the same overall height as its smaller brother with 4.2 litres displacement.

The characteristic features of the 500 E included discreetly flared wings, fog lamps integrated into the front apron, and 16-inch eight-hole light-alloy wheels with wide-base tyres of size 225/55 ZR 16. Compared with the other models, the body was lowered by 23 millimetres; to compensate for load-induced spring compression the rear axle was fitted with hydropneumatic level control as standard. Production of the exclusive model, which carried a price tag of almost DM 135,000 when it appeared, was handled in close collaboration with Porsche. Bodyshell construction and final assembly were performed at Porsche in Stuttgart-Zuffenhausen, while the Sindelfingen plant retained responsibility for the paintwork and delivery.

1991: The 124 appears with an open top

In September 1991, as a further body variant of the 124 series Mercedes-Benz presented the 300 CE-24 Cabriolet. Production began in 1992. After an interruption of exactly 20 years, a four-seater Cabriolet was once again available in the intermediate range. Cabriolet development was based on the coupe. After a great investment of engineering know-how, the two-door was prepared for its role as an open-topped car – merely stiffening the body adequately required the redesign of 1000 parts. Each Cabriolet needed a total of more than 130 kilograms of additional sheet metal to structurally compensate for the 28 lost kilograms of the coupe roof. Body vibrations, a system-related weak point of open cars, were eliminated by four vibration absorbers fitted in the left shock absorber strut, the roof frame and the side boot recesses.

To make up for the lack of side roof frame, in the area prone to buckling the A-pillars were welded together with metal sections inside the pillars to form a sturdy unit. The combination of this A-pillar with an automatic rollover bar produced a fully-fledged safety system. Specifically for the 300 CE-24 Cabriolet, a linear bar arranged behind the rear seats was developed that extended almost perpendicularly within 0.3 seconds in the event of a rollover. Simultaneously it served the rear-seat passengers as a head restraint. For this purpose the rollover protection could also be extended and retracted manually.

The fully retractable top impressed with an abundance of well-thought-out technical details. Retracted, the high-precision structure, which weighed 43 kilograms and had 27 linkage parts and 34 joints, occupied a mere 80 litres of space, so that the car still had a generously sized boot. The large heated rear window made of safety glass was screwed flush with the outer skin by a double frame, affording undistorted rear vision. To improve the convenience of operation, as an optional extra there was an electrohydraulic actuation system for the top. Ten valves and twelve electric limit switches controlled the perfect sequence of three swivelling movements, as well as the correct engagement of the different locking mechanisms, and monitored the closed condition when the car was on the move.

1992: Two million 124 series vehicles

In June 1992 the 2,000,000th vehicle of the 124 series rolled off the assembly line. Just a few weeks later the intermediate class again got a major facelift. This time Mercedes-Benz concentrated on the engine and appointments. The petrol-powered models were presented with a thoroughly revised engine range, completely converted to four-valve-per-cylinder technology. The four-cylinder units, featuring 2 and 2.2-litre displacements in the 200 E (100 kW/136 hp) and 220 E (110 kW/150 hp) models respectively, were from the M 111 series. The new engines were distinguished by increased output and higher torque over the entire engine speed range; at the same time, fuel consumption was down. Thanks to an increase in the volume of the catalytic converter, pollutant emissions were also reduced.

As successors to the two-valve-per-cylinder six-cylinder unit and the 3-litre four-valve unit, four-valve-per-cylinder engines with displacements of 2.8 and 3.2 litres now powered the 280 E (145 kW/197 hp) and 320 E (162 kW/220 hp). These engines, like the old 3-litre four-valve unit, belonged to the M 104 series, but had a changed bore-to-stroke ratio. All four- and six-cylinders now had the same bore. The new 2.8-litre engine surpassed the proven two-valve-per-cylinder engines of the M 103 model family in power and torque without consuming more fuel. In the 3.2-litre variant, which was already providing good service in the S-Class, the rated output was the same as that of the old 3-litre four-valve unit, but it was reached at an earlier point. Despite the obvious advantages of the new power plant, the 3-litre engine remained in the range for the time being to power the 4MATIC models and the Cabriolet.

Apart from the new petrol engine range, the model refinements included distinctly upgraded standard appointments for all models of the intermediate class. Airbag, central locking and electrically adjustable exterior mirrors on both sides were part of the standard specifications from October 1992 on. In addition, the four-cylinder models were equipped with a five-speed transmission at no extra charge.

400 E now also in Europe

Concurrently with the facelifted models of the intermediate class, the new 400 E appeared on the European market. This variant of the W 124 had already been in production for a year destined for export to the USA and Japan. As the new top model among the volume cars, it featured the 4.2-litre V8 engine with four-valve-per-cylinder technology, familiar from the S-Class, and generated 205 kW (278 hp). Performance did not quite reach the level of the 500 E, but was still highly impressive: With the four-speed automatic transmission as standard, the 400 E took 6.8 seconds to reach 100 km/h from a standing start. Again, the top speed was electronically governed at 250 km/h. On the outside, only the model plate distinguished the 400 E from its class brothers. Under the sheet metal, on the other hand, it diverged in a number of ways. For example, the bodyshell structure had been modified to accommodate the large engine, and parts of the suspension and brake system were borrowed from the SL models. Finally, the exhaust system corresponded to that of the 500 E.

1993: Four-valve-per-cylinder diesel

As a world first, the four-valve-per-cylinder technology also found its way into the diesel models in 1993. The new technology guaranteed not only enhanced torque and power over a substantially larger engine speed range, but even cut full-load fuel consumption by as much as eight percent. On top of that the optimised combustion process slashed particulate emissions in the exhaust gas by around 30 percent.

Mercedes-Benz only changed the five- and six-cylinder naturally aspirated engines to the four-valve system, the 2-litre four-cylinder and the two turbocharged engines retained the two-valve-per-cylinder configuration. Fresh-air intake in the four-valve diesel models was achieved by means of louvres on the right front wing, as was already the case in the turbocharged variants. To further improve environmental compatibility, from June 1993 all diesel models of the 124 series were fitted as standard with exhaust gas recirculation and oxidising catalytic converter.
As part of the model refinements, some finer points of the 2.8-litre six-cylinder engine of the 280 E were once again modified. But this time it was not mainly a question of new technology. Instead the rated output was reduced by three kW (4.1 hp) to 142 kW (193 hp) to give the model a better third-party insurance classification in Germany.

Updated styling

From June 1993 the Mercedes-Benz designers revised the bodies of all 124 series models, updating them stylistically and adapting them to the other model series. The most striking feature of the modified vehicles was the radiator grille, which was redesigned after the S-Class. This so-called integrated radiator featured a much narrower chrome surround compared with the previous design, and the Mercedes star sat on the bonnet as in the S-Class saloons. The light units were also modified to include colourless glass covers on the front direction indicators and bi-chromatic covers on the taillights.

Changes also were made to the shape of the boot lid, to the wheels and to the bumpers. Among other things, the steel disc wheels were given new hub caps in a six-hole design, and the protective mouldings on the bumpers were painted the colour of other detachable parts. In addition, the protective strip on the rear bumper was extended to the wheel cut-outs.

From the intermediate class to the E-Class

To coincide with the sales launch of the redesigned models, a new nomenclature came into effect for the 124 series in June 1993. In analogy to the S-Class and the new C-Class, the intermediate class was now called the E-Class. The model designations also followed a modified system, in which letters documented a car’s membership of a certain class. The letter(s) were followed by a three-digit number based as previously on engine displacement. The E suffix that formerly was used to indicate a petrol engine with fuel injection was potentially a source of confusion, but this abbreviation could now be dropped, since there were no longer carburettor engines in the range. Forthwith, Mercedes dispensed with the practice of codifying body variants such as the coupe and station wagon, which were in any case self-evident.

In the case of the diesel-engined models, a postpositive "Diesel" or "Turbodiesel" replaced the previous letter symbols. Applying the new rules, the 300 D, for example, got the designation "E 300 Diesel". However, the word "DIESEL" on the right of the boot lid could be omitted on request, as could model plates in general. Upon introduction of the new nomenclature, the 400 E was renamed E 420 to reflect its actual engine displacement. Apart from the model designation two technical details also were changed: 16-inch 8-hole light-alloy wheels and wide-base tyres size 215/55 ZR 16 were now included in the standard equipment of the E 420, and the larger-sized brakes of the SL models were fitted to the front wheels.

An aura of even greater sportiness was spread by the new top-of-the-range model E 60 AMG, which the "corporate tuners" offered with the 6-litre V8 M 119 engine. The output of the racer was 280 kW (381 hp) at 5,600 rpm. Coupe and cabriolet were also uprated by AMG: E 36 AMG models developing 200 kW (272 hp) at 5,750 rpm likewise came on the market in 1993.

Taking leave of the first E-Class

In June 1995, two years after the last extensive facelift, Mercedes-Benz introduced the E-Class saloons of the 210 series, the successor to the 124 series. Production of the 124 series saloons ended a short time later, between June and August 1995 depending on model. The station wagon continued to be built until 1996. Until 1996 Mercedes-Benz also manufactured the E 250 Diesel and E 220 in ckd kits and sent them to Pune, India, for assembly. The convertible – since its facelift the range comprised the E 200 Cabriolet, E 220 Cabriolet, E 320 Cabriolet and E 36 AMG Cabriolet – even continued rolling off the assembly line until 1997
All in all, in a production period lasting over eleven years, 2,058,777 saloons, 340,503 station wagons, 141,498 coupes, 6,343 cabriolets, 2,342 long-wheelbase saloons and 6,398 partially bodied chassis for special-purpose bodies were manufactured – making a grand total of 2,555,861 vehicles.

124 series in the press

auto motor and sport, Germany, issue 25/1990, wrote of the Mercedes-Benz 500 E: "As good-natured as a story-hour presenter, as agile as a nimble sports car, and with ride comfort to boot! Yes, that's the most surprising component of the suspension. Despite their firmness, the springs and dampers absorb bumps in such a well-mannered way that even the most discriminating individual could have no cause to grumble."
Looking back, Auto-Bild, Germany, issue 18/2006, recalled the launch of the 124 series: "But the new car caused an even bigger adrenalin rush, it had real character. Classic Mercedes at the front, powerful design at the rear."

mot, Germany, issue 13/1995, on the Mercedes-Benz E 200, E 290 Turbodiesel and E 320 (the top-of-the-range model then): "Perhaps the most spectacular innovation in the new E-Class model range can be found under the bonnet of the E 290 Turbodiesel. Spectacular, because Mercedes, for decades an advocate of the prechamber diesel, for the first time relied for this power plant on the direct injection principle."

mot, Germany, No. 10/1995, on the new E-Class of series 210, comparing it with the 124: "Though already a Methuselah among cars with its eleven years, the W 124 still cuts a good figure."





































Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART IX


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Parts X - XVIII (also recap 1-9)



For an easy reach of all the texts on the issue of the "History of the E-Class", we've compiled all the links heading to them in one single post. Roll down and start reading. And, last but not least, we have also added a number of 25 exclusive photos with all E models that matter. From W120/W121 up to W211. Enjoy!


(Parts 10-18):


Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART X

Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART XI

Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART XII

Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART XIII

Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART XIV

Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART XV

Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART XVI

Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART XVII

Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - PART XVIII


Entire Story:

Mercedes-Benz-Blog -- Unmistakable. Unique. Classy. Mercedes-Benz.: Mercedes-Benz-Blog TRIVIA: History of the E-Class - Complete story collection














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From 1973 on ribbed tail lights to reduce dirt accumulation

And I thought they were purely cosmetic. Shame on me. :D
 
I actually love all the E-Classes but my true love is the W123. Then again, I've always also liked the W114/W115 - and here's a big reason to love them. :bowdown:

The "Stroke 8" remained a favourite for many years not only with German taxi drivers. The Mercedes-Benz with the highest known recorded mileage in service is a Greek taxi, a 1976 240 D. Its owner, taxi driver Gregorios Sachinidis from Thessaloniki, covered 4.6 million kilometres in this car. Since 2004 the car belongs to the collection of the Stuttgart Mercedes-Benz Museum. Vehicles like the world-record taxi further underscore the reputation of the "Stroke 8" as an indestructible and reliable long-distance runner. The respect and acknowledgement voiced by the contemporaries of the "Stroke 8" can be heard to this day in the enthusiasm of the pre-vintage and vintage car community for the 115 and 114 series.
 

Mercedes-Benz

Mercedes-Benz Group AG is headquartered in Stuttgart, Germany. Established in 1926, Mercedes-Benz Group produces consumer luxury vehicles and light commercial vehicles badged as Mercedes-Benz, Mercedes-AMG, and Mercedes-Maybach. Its origin lies in Daimler-Motoren-Gesellschaft's 1901 Mercedes and Carl Benz's 1886 Benz Patent-Motorwagen, which is widely regarded as the first internal combustion engine in a self-propelled automobile. The slogan for the brand is "the best or nothing".
Official website: Mercedes-Benz (Global), Mercedes-Benz (USA)

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