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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    Refuelling
    CAUTION: Do not attempt to start the engine ifyou have filled the fuel tank with theincorrect fuel. This could damage theengine. Have the system checked by aproperly trained technician immediately. ...

    Brake PadWear Indicators
    The front and rear disc brakes on all models have audible brake pad wear indicators. If the brake pads need replacing, you will hear a distinctive, metallic screeching sound when you apply ...

    Displays in the instrument cluster
    Indicator lamp Depending on how the vehicle is equipped, the indicator lamp in the instrument cluster indicates whether the system is switched on. Desired speed ▷ The marking lights ...