Fuel filler flap
The fuel filler flap is unlocked or locked automatically when you open or close the vehicle with the SmartKey or using KEYLESSGO.
The position of the fuel filler cap is displayed
in the instrument cluster 
. The
arrow
next to the filling pump indicates the side of
the vehicle.
Example: Sedan
1. To open the fuel filler flap
2. To insert the fuel filler cap
3. Tire pressure table
4. Fuel type
See also:
Transfer case
This section is only valid for vehicles with 4-wheel drive (4MATIC). Power is
always
transmitted to both axles.
Performance tests may only be
carried
out on a 2-axle dynamometer. The brake
...
Important safety notes
WARNING
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval. A clogged
filter will reduce the air volume to the interi ...
Premium-grade unleaded gasoline
To ensure the longevity and full performance of the engine, only premiumgrade
unleaded gasoline may be used. If there is no premium-grade unleaded gasoline available
and regular-grade unleaded ...