Short interview with Michael Kelz, Head of E-Class Development: "With a great deal of know-how from our SUVs"
Michael Kelz is the Head of E-Class Development and as such has also been responsible for the All-Terrain. We spoke with the qualified engineer about the off-road capabilities of the new model, among other features.
Mr Kelz, with the All-Terrain, Mercedes-Benz is now presenting a model variant which has never existed before in the long tradition of the E-Class. Why?
Kelz: Many customers appreciate the freedom of being able to take their vehicle off the beaten track once in a while. The All-Terrain is able to do this while at the same time offering an extremely high level of efficiency when driving on the motorway. A particularly appealing feature is certainly also the more forceful, more striking design.
Off the beaten track – this just means wet fields and tracks, doesn't it? What is the level off-road capability of the new model?
Of course the All-Terrain does not boast the same off-road capabilities as our SUV models, this isn't possible from a purely geometric point of view due to aspects such as the angles of approach and departure and overhangs. Nevertheless, on test drives the model demonstrated to us just how capable it is in off-road terrain. Spontaneous detours into off-road terrain, along farm tracks, and over snow or sand are possible at any time in the All-Terrain – combined with the outstanding ride comfort, dynamism and agility of the E-Class."
In addition to 4MATIC all-wheel drive, the All-Terrain has AIR BODY CONTROL multi-chamber air suspension fitted as standard. What other elements contribute to its off-road capabilities?
AIR BODY CONTROL adjusts the ground clearance to suit the particular terrain and therefore increases the All-Terrain model's off-road capabilities decisively. But the All-Terrain is not simply a higher-riding E-Class. We incorporated a wealth of SUV know-how into its development. This can be seen in the model-specific All-Terrain transmission mode, for example, for which we altered the thresholds for ESP®, active yaw control and acceleration skid control (ASR) to suit off-road conditions.
With 4MATIC, there was a design change for the new E-Class. The transfer case is now no longer integrated in the automatic transmission, but flange-mounted. What advantages does this solution offer?
Primarily greater efficiency – due to the modified design, we were able to improve efficiency, reduce friction and save around 3 kg in weight. All of the existing advantages of 4MATIC, such as the fast response in difficult road conditions and the compact design, have also been retained.
In addition, with the introduction of multi-stage ESP® in the E-Class, it has also been possible to achieve better control and performance for the all-wheel-drive system in the transmission modes.