The concept

The automatic engine start-stop function helps save fuel. The system switches off the engine during a stop, e. g., in a traffic congestion or at traffic lights. The ignition remains switched on.

The engine starts again automatically for driving off.

    See also:

    System limits
    Speed range Best results are achieved when using the system on well-developed roads and highways. The desired speed can be selected between 20 mph/30 km/h to 110 mph/180 km/h. The system can a ...

    The Appendage Factor
    M cars have had what I call a high appendage factor — the feeling that the car is an extension of the driver. It's typically experienced in cars whose various systems and characteristics are well- ...

    Maintenance and repair
    Advanced technology, e.g. the use of modern materials and powerful electronics, requires specially adapted maintenance and repair methods. You should therefore have the corresponding work on your ...