See also:

Fuel gauge
The vehicle inclination may cause the display to vary. Notes on refueling, refer to page 234. ...

Remove attached partsfollowing 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. ...

Notes
CD/DVD player and changer Do not remove the cover BMW CD/DVD players and changers are officially designated Class 1 laser products. Do not operate if the cover is damaged; otherwise, severe e ...