See also:

Refueling
Always switch off the engine before refueling; otherwise, fuel cannot be added to the tank and a message will be displayed. Take all precautionary measures and observe all applicable regulation ...

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

Switch off any functions thatare not currently needed
Functions such as seat heating and the rear window defroster require a lot of energy and consume additional fuel, especially in city and stopand- go traffic. Therefore, switch off these function ...