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:
Going & Stopping
The 750i gets a new V-8 engine for 2009 that's smaller but makes more power
than the previous engine — 400 horsepower, to be exact. It's the same engine
that delighted me in the X6 xDrive50i, and ...
Customer Relations
At a glance
Contact Customer Relations for information on
all aspects of your vehicle. ...
Switching off automatically
The system switches off and the LED goes out:
After approx. 160 ft/50 m when driving forward.
Above approx. 22 mph/36 km/h when driving
forward.
Switch on the system again if necessary. ...