www.eurocarnews.com - Mercedes Benz AG - The new CLS is capitalising on these benefits too. For the first time, the four-door coupé is available with all-wheel drive in the guise of the CLS 350 CDI 4MATIC BlueEFFICIENCY. As with the 4MATIC system's set-up on a dry or wet road, directional stability and, therefore, active safety are paramount at all times when wintry conditions prevail, too. The mechanical principle of the 4MATIC system featuring a 45 torque split between the front and rear axles and the multi-disc limited- slip centre differential with a basic locking torque of 50 Nm offer all the right ingredients. This basic design enables high levels of traction, as the dynamic shift in axle load toward the rear axle that occurs during acceleration is harnessed to deliver more drive torque to the rear wheels. However, the multi-disc differential lock is also able to shift the drive torque between the front and rear axles, varying the split as the road conditions dictate. Consequently, intervention by the ESP®, 4ETS or ASR electronic control systems can be delayed for as long as possible and the bulk of the drive torque converted into tractive power, even on slippery roads. All control system interventions go virtually unnoticed, yet drivers still know straight away if they are driving on the limit: in such instances, a yellow warning symbol flashes in the instrument cluster as a highly visible prompt to adapt their driving style to the road conditions.
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