Close the windows and glasssunroof
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 ...
HDC Hill Descent Control
The concept
HDC is a downhill driving assistant that automatically
controls vehicle speed on steep downhill
gradients. Without applying the brakes, the
vehicle moves at slightly more than walking
...
Charging the battery
In the vehicle, only charge the battery via the
terminals in the engine compartment, with the engine switched off. ...