See also:

Energy recovery
The energy of motion of the vehicle is converted to electrical energy while coasting. The vehicle battery is partially charged and fuel consumption can be lowered. ...

Switch off the engine during longer stops
Switch off the engine during longer stops, e.g., at traffic lights, railroad crossings or in traffic congestion. Fuel savings are achieved after the vehicle is switched off for only approx. 4 s ...

Maintaining/storing the speed
Press the button*. When the system is switched on, the current speed is maintained and stored as the desired speed. It is displayed in the speedometer and briefly displayed in the instrument ...