C-Class (W205) [Official] Mercedes-Benz C-Class (W205)

[Wolfgang]

MB Sweden also tested it.



Start - Pressinformation från Mercedes-Benz

 

[Mick Briesgau]

Does Teknikens Varld need this kind of attention? It's a joke.

 

[Zafiro]

MB Sweden also tested it.

Ha, thats the same place I took my bike license

 

[Zafiro]

Does Teknikens Varld need this kind of attention? It's a joke.

However something is wrong with this car. At the same day and time they tested a Citroen DS5 without any problems. Also they were handed a second C350e and same problem occured.

Note: C350 e is heavier car than the rest and comes with special tyres and air suspension.
Same magazine have testet other versions of C-class without problems so obviosly something is wrong with the "e-version".
One thought, I dont think this moose test reflect real world driving.

 

[martinbo]

After the briefest stints of googling - I can't find any cutaway pics of the C350e to look at where the battery pack is located. So I lost interest. @Wolfgang - do you have access to any such media? If so please could you post a pic?

Thanks and regards...

 

[martinbo]

This is what the Mercedes Benz website states:

"The battery is water-cooled, weighs around 100 kilograms and is mounted in a sheet steel housing underneath the rear axle in order to maximize crash safety, driving dynamics and boot space"

Two bags of cement under the rear axle - that thing's going to swing like a pendulum under severe provocation as seen in the Teknikens Varld test. The ESP will not prevent the oversteer moment as physics will prevail first in spite of the electronics kicking into action immediately.

 

[Giannis]

@martinbo

It's over the rear axle.

Source: media.daimler.com

 

[martinbo]

^ I'm just quoting the website. Over - and somewhat behind - it is. Recipe for a tank slapper.

 

[klier]

So the C350e sucks....

Interesting MB didn't properly tested this car in the Elk test after the Baby Benz debacle that near killed the company

 

[Rolf]

This is what the Mercedes Benz website states:

"The battery is water-cooled, weighs around 100 kilograms and is mounted in a sheet steel housing underneath the rear axle in order to maximize crash safety, driving dynamics and boot space"

Two bags of cement under the rear axle - that thing's going to swing like a pendulum under severe provocation as seen in the Teknikens Varld test. The ESP will not prevent the oversteer moment as physics will prevail first in spite of the electronics kicking into action immediately.

AMS and other german magazines perform slalom tests and evasive tests on all their test cars with just driver (unloaded) and then with full load (to reflect the passengers and luggage) as per factory max load capacity (normally another 400kg or more over the normal car weight). The basic C-class platform which most likely has been used for the 350e performs very well under these full load tests without breaking its rear end into heavy oversteer as demonstrated on that video. Either the ESP wasn't performing to spec (ie it should brake the wheels immediately to prevent large rear slip angles to allow the heavy oversteer) or it was switched off or the cars rear tyre pressure was low. I don't think the extra 100kg mounted low in the chassis would have such a negative impact on the cars dynamic behavior.

 

[klier]

I don't think the extra 100kg mounted low in the chassis would have such a negative impact on the cars dynamic behavior.

The rest of your post might be very true, but these 100 kg extra over there has a big impact on the dynamics without a shadow of a doubt.

And I am well aware it's the nature of the beast. It's probably similar on the 330e.

 

[Monster]

I don't think the extra 100kg mounted low in the chassis would have such a negative impact on the cars dynamic behavior.

It depends on where that extra weight is located. It appears to be placed above and slightly behind of the rear axle, which is the worst place to put an extra 100kg on the car.

 

[Rolf]

The rest of your post might be very true, but these 100 kg extra over there has a big impact on the dynamics without a shadow of a doubt.

And I am well aware it's the nature of the beast. It's probably similar on the 330e.

You do have a point, but it depends also on the cars weight distribution, as maybe the 100kg extra over the rear axle could improve the weight distribution from rear/front if the car is nose heavy (tend to understeer in hard cornering), so it could help to improve the balance during heavy cornering.

 

[martinbo]

Either the ESP wasn't performing to spec (ie it should brake the wheels immediately to prevent large rear slip angles to allow the heavy oversteer) or it was switched off or the cars rear tyre pressure was low. I don't think the extra 100kg mounted low in the chassis would have such a negative impact on the cars dynamic behavior.

I think you have a misplaced faith in ESP. Physics will always prevail - ESP can only mitigate to an extent (and it actually does here, admirably, given the amount of yaw).

 

[Rolf]

Maybe they used easy drift tyres for their Elk test like this video!

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[Monster]

You do have a point, but it depends also on the cars weight distribution, as maybe the 100kg extra over the rear axle could improve the weight distribution from rear/front if the car is nose heavy (tend to understeer in hard cornering), so it could help to improve the balance during heavy cornering.

In the case of the C350e, the extra weight over and behind the rear axle had a negative impact on the car's handling in an emergency situation.

 

[Emex]

I would have thought that MB would have calibrated the ESP to work with the extra weight on the Hybrid models, they have said in the past that they re-calibrate the ESP on the Guard models, and they weigh quite a bit more than a Hybrid model

 

[Kowalski]

I think a recall will happen soon.

 

[mehdi tavakol]

diamond grill

 

[Mr. Mercedes]

That looks so wrong.