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:
General information
Your vehicle contains advanced technology for
the reduction of fuel consumption and emissions.
Fuel consumption depends on a number of different
factors.
The implementation of certain measures, ...
BMW 7 Series Owners Manual
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Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not avai ...