See also:

Remove unnecessary cargo
Additional weight increases fuel consumption. ...

Tire inflation pressures at max. speeds above 100 mph/160 km/h
Speeds above 100 mph/160 km/h In order to drive at maximum speeds in excess of 100 mph/160 km/h, please observe, and, if necessary, adjust tire pressures for speeds exceeding 100 mph/160 km/h ...

Switching on/off directly
1. "Settings" 2. "Climate" 3. "Activate parked-car vent." The symbol on the automatic climate control flashes if the system is switched on. ...