See also:

Tire inflation pressures for X6 xDrive50i
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Tow-starting
Note Do not tow-start your vehicle. Due to the automatic transmission, the engine cannot be started by tow-starting. Have the cause of the starting difficulties remedied. ...

Fuel tank capacity
Gasoline engine Fuel tank capacity: approx. 21.6 US gal/82 liters. Refuel promptly Refuel below a range of 30 miles/50 km; otherwise, engine functions are not ensured and damage may occur. ...