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:

    Switching on/off
    The three red indicator lamps in the button indicate the heating level you have selected. If the battery voltage is too low, the seat heating may switch off. Driver's and front-passenger seat ...

    Washer
    To wash the rear window while the rear wiper is operating, turn the knob on the end of the wiper control lever upward to the “” position. The washer fluid sprays until you release the knob. To ...

    Temporary Spare
    A spare tire can be purchased for your vehicle as an accessory. Follow the instructions included with the spare tire regarding use and stowing in the vehicle. See also page 290 for additional info ...