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:
Locking separately
The trunk lid can be locked separately using the
switch in the front center armrest.
Trunk lid secured, arrow 1.
Trunk lid not secured, arrow
2.
Slide the switch into the arrow 1 posit ...
Capacities
...
Switch off the engine during longer stops
Switch off the engine during longer stops, e.g.,
at traffic lights, railroad crossings or in traffic
congestion.
Fuel savings are achieved after the vehicle is
switched off for only approx. 4 s ...