After the ignition is switched off
The roof can still be operated for approx. 1 minute, as long as no door has been opened.
See also:
Office
...
Fuel tank capacity
Approx. 22.5 US gallons/85 liters, including the
reserve capacity of approx. 2.1 US gallons/8 liters.
X5 xDrive50i/X6 xDrive50i: reserve capacity of
approx. 3.2 gallons/12 liters.
Refuel promp ...
General information
Lamps and bulbs make an essential contribution
to vehicle safety.
The manufacturer of the vehicle recommends
that you entrust corresponding procedures to
the service center if you are unfamiliar ...