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:
BMW Maintenance System
The maintenance system directs you to required
maintenance measures and thereby supports
you in maintaining road safety and the operational
reliability of the vehicle. ...
Controls
Buttons at a glance
1 System on/off, interrupt
2 Resume speed
3 Store speed*
4 Store, maintain/change speed
Switching on
Press the button on the steering
wheel.
The marking in the speedom ...
Ventilation in rear
Ventilation in rear
1 Use the thumbwheels to smoothly open and
close the air vents
2 Use the lever to change the direction of the
air flow ...