The Automatic Start/Stop function ensures that fuel is only used when the car is actually moving. When the vehicle comes to a temporary standstill, for example at traffic lights or in stop-and-go traffic, the Automatic Start/Stop function saves fuel by switching off the engine as soon as the car is in neutral position and the driver brakes the car to a complete standstill. A signal in the Info Display indicates that the Automatic Start/Stop function is active. As soon as or the foot taken from the brake, the engine turns itself back on automatically. This function never compromises driving comfort or safety, as it remains inactive if the engine has not reached its optimal running temperature, the interior has not yet been sufficiently heated or cooled, if the battery level is too low or if the steering wheel is being turned. If necessary, a central control unit restarts the engine even when at a standstill, for example if the car begins to roll or if condensation starts to form on the windshield. The Automatic Start/Stop function can be switched off at any time with the push of a button.