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:
Tire inflation pressure values up to 100 mph/160 km/h
320i
328i
335i
...
The concept
The parking brake is used to prevent the vehicle
from rolling when it is parked.
Engine switched off: the parking brake acts
on the rear wheels.
Engine running: the parking brake acts on
...
SAFETY
The 2012 X5 received four out of five stars in rollover crash tests by the
National Highway Traffic Safety Administration. It hasn't undergone any of
NHTSA's other crash tests, and it hasn't been ...