BMW 5 Series: Close the windows and glass 
sunroof - Saving fuel - Driving tips - BMW 5 Series Owners ManualsBMW 5 Series: Close the windows and glass sunroof

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

    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. ...

    Check the tire inflation pressure regularly
    Check and, if necessary, correct the tire inflation pressure at least twice a month and before starting on a long trip. Low tire inflation pressure increases rolling resistance and thus raises ...

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    Switch operation
    The windshield wiper and washer switch operates when the ignition switch is placed in the ON position. Push the lever down to operate the wiper at the following speed: 1 Intermittent — interm ...

    Rear passenger’s cup holder
    A dual cup holder is built in the armrest. CAUTION When a cup containing a beverage is in the cup holder, do not fold down or recline any seat. Otherwise, the beverage could spill while driving ...

    Electric exterior mirrors
    Electric exterior mirrorsLeft-hand mirror AOff BRight-hand mirror C Electric exterior mirrors are fitted with aheating element that will defrost or demistthe mirror glass. They will switch onautomati ...