BMW 5 Series: Remove attached parts 
following use - Saving fuel - Driving tips - BMW 5 Series Owners ManualsBMW 5 Series: Remove attached parts following use

Remove auxiliary mirrors, roof or rear luggage racks which are no longer required following use.

Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption.

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

    Close the windows and glass sunroof
    Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...

    See also:

    Disconnecting the cell phone
    The cell phone is automatically disconnected from the infotainment system if it is moved out of range. The cell phone can be manually disconnected from the hands-free system by pressing and holdi ...

    Headlights
    To turn on the headlights, turn the knob on the end of the turn signal lever. first position Instrument panel illumination, tail lights, front side marker lights and license plate lights are on ...

    Beep Sounds
    Air Bag/Front Seat Belt Pretensioner System Warning Beep If a malfunction is detected in both the air bag/front seat belt pretensioner system and the warning light, a warning beep sound will be hea ...