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:

    Ignition on
    button, and do not press on the brake pedal at the same time. Manual-shift transmission: press the Start/Stop button, and do not press on the clutch pedal at the same time. All vehicle systems ...

    Displaying images
    1. Use the buttons or the thumbwheel of the remote control to select an image. 2.  Press the button. Displaying images 3. Displaying images: ▷ Scroll using the menu navigation butto ...

    Safety
    Both the coupe and convertible have front airbags plus side-impact airbags built into the front seats. As required of all 2012 models sold in the U.S., the 640i has standard antilock brakes and an ...