See also:

Remove attached parts following use
Remove unneeded auxiliary mirrors, roof or rear luggage racks after use. Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption. ...

Tachometer
Tachometer Never force the engine speed up into the red warning field, see arrow. In this range, the fuel supply is interrupted to protect the engine. ...

Brake Energy Regeneration: an energy-saving innovation.
The new BMW 5-Series sedan continues the roll-out of BMW's Brake Energy Regeneration system on US models. To save energy and reduce the vehicle's fuel consumption over time, this system manages th ...