C-Class [Official] Mercedes-AMG C63


The Mercedes-Benz C-Class is a series of compact executive cars produced by Mercedes-Benz Group AG. Introduced in 1993 as a replacement for the 190 (W201) range, the C-Class was the smallest model in the marque's line-up until the W168 A-Class arrived in 1997.
I quite like it. I like it more than I expected. It's a subtle exterior design that doesn't scream power and money to the face of the typical C180 or C200 drivers. It's more understated than the visually extreme, for Stuttgart's standard W204 (pre facelift) AMG. Colour me impressed.

Anyways, S version comes with mechanical diff and the other version use a electrical diff.

It's the opposite Andreas. The regular C63 gets the mechanical diff and the C63 S the electronic one.
 
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http://www.autoevolution.com/news/m...-they-stack-up-against-each-other-86985.html#
 
With the W204, the sedan was an easy choice, the sedan just looked better. The coupe is going to look absolutely amazing too. I'm actually having a hard time deciding between a coupe or a sedan. It's a great problem to have, but man Mercedes, did you have to make it so difficult?
 
I see. Isn't mechanical diff suppose to be better than electronic one?

Not so fast. Ferrari has been using an e-diff in their cars for a long time now. An e-diff gives you greater flexibility. You can add brake torque vectoring into the software or define how much lock you want, during what conditions, and when. The mechanical diff on the W204 only had a 30% locking ability. Keep in mind, The W205 e-diff is the same e-diff from the SLS AMG. The fact that the cars come with an LSD standard is enough reason to celebrate, the W204 came with an open diff and it was hilarious how often you could get the traction control light to come on from a stop on dry roads. Wet roads? You could have a field day.
 
It does look a bit less athletic, but that's obviously because of the body design, which is obviously a scaled-down S-Class design.

Hard to make an elegant design look too aggressive.
 
Not so fast. Ferrari has been using an e-diff in their cars for a long time now. An e-diff gives you greater flexibility. You can add brake torque vectoring into the software or define how much lock you want, during what conditions, and when. The mechanical diff on the W204 only had a 30% locking ability. Keep in mind, The W205 e-diff is the same e-diff from the SLS AMG. The fact that the cars come with an LSD standard is enough reason to celebrate, the W204 came with an open diff and it was hilarious how often you could get the traction control light to come on from a stop on dry roads. Wet roads? You could have a field day.

I think there is some confusion here about exactly what an "e-diff" is. This term was first used back the day when the 135i was introduced in 2008. That car had an open differential, but used the rear brakes to brake individual drive wheels if there was excessive spinning of one of the drive wheels, which then directed torque to the other drive wheel which presumably had more traction. This reactive system tried to mimic the effects of a mechanical differential, but obviously is not as good. Even my 9 year old C55 has this system.

Then came the Ferrari 458 with another "e-diff". This is different. This car has an mechanical multi-clutch limited slip differential, but the amount of "lock" was controlled electronically. Because of the much more variation in the amount of "lock" that is available and controlled by an ECU, this system is superior to the classic pure mechanical limited slip differential.

My GT3 has a similar system (electronically controlled mechanical limited slip differential), and I must presume that the C63 S has a similar type of setup, while the standard C63 has a simple mechanical limited slip differential with no electronic control.

Torque vectoring is something completely different. Here the brakes are used ACTIVELY on the inside drive wheel during cornering to increase the "yaw" or rotation of the car to make turn-in more efficient and effective.
 
Yup the C63 has electronically controlled locking differential with electric motor in it that regulates the amount of locking factor to each individual wheel. Not sure whether it has torque vectoring via brakes as well.
 
I think there is some confusion here about exactly what an "e-diff" is. This term was first used back the day when the 135i was introduced in 2008. That car had an open differential, but used the rear brakes to brake individual drive wheels if there was excessive spinning of one of the drive wheels, which then directed torque to the other drive wheel which presumably had more traction. This reactive system tried to mimic the effects of a mechanical differential, but obviously is not as good. Even my 9 year old C55 has this system.

Then came the Ferrari 458 with another "e-diff". This is different. This car has an mechanical multi-clutch limited slip differential, but the amount of "lock" was controlled electronically. Because of the much more variation in the amount of "lock" that is available and controlled by an ECU, this system is superior to the classic pure mechanical limited slip differential.

My GT3 has a similar system (electronically controlled mechanical limited slip differential), and I must presume that the C63 S has a similar type of setup, while the standard C63 has a simple mechanical limited slip differential with no electronic control.

Torque vectoring is something completely different. Here the brakes are used ACTIVELY on the inside drive wheel during cornering to increase the "yaw" or rotation of the car to make turn-in more efficient and effective.

Indeed, the over loading of the term 'ediff' by different manufacturers has caused much confusion. Ferrari's E-diff which debuted in F430, Porsche's PTV plus, BMW's M Active diff (since F10 M5) are all proper mechanical LSDs with an electrical motor or other means to vary the locking ratio dynamically. Where as the poor mans 'ediff' just uses brakes to brake the side with out traction.
 

Mercedes-AMG

Mercedes-AMG GmbH, commonly known as AMG (Aufrecht, Melcher, Großaspach), is the high-performance subsidiary of Mercedes-Benz AG. AMG independently hires engineers and contracts with manufacturers to customize Mercedes-Benz AMG vehicles. The company has its headquarters in Affalterbach, Baden-Württemberg, Germany.
Official website: Mercedes-AMG

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