See also:

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 ...

Radio ready state and ignition off
All indicator and warning lamps as well as displays in the instrument cluster go out. Transmission position P with the ignition off When the ignition is switched off, position P is engaged a ...

Remove unnecessary cargo
Additional weight increases fuel consumption. ...