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:

    Powertrain: The essence of BMW EfficientDynamics.
    The new BMW 5-Series will be offered in the United States with a choice of three gasoline engines. At its introduction, the new 5-Series will be available as a 535i and 550i. The 528i and xDrive a ...

    Activation/deactivation
    Press the button. ...

    The concept
    HDC is a downhill driving assistant that automatically controls vehicle speed on steep downhill gradients. The vehicle moves at approximately walking speed without braking intervention by the ...