Fuel grade

premium-grade gasoline as this avoids You should only refuel with unleaded premium-grade gasoline as this avoids damaging the catalytic converter.
If engine running problems are apparent, have the cause checked immediately and repaired. Excess unburned fuel can otherwise enter the catalytic converter, leading to overheating and possibly causing a fire.

Use a filter when refueling from a fuel can.
Otherwise, the fuel lines and/or injection system could be blocked by particles from the fuel can.

gasoline with a specified minimum octane Only refuel with premium-grade unleaded gasoline with a specified minimum octane number of 91 (average value of 96 RON/86 MON).
You will usually find information about the fuel grade on the pump. If you cannot find the label on the pump, ask the staff for assistance.
You can find more information under "Fuel", or by contacting an authorized Mercedes-Benz Service Center or visiting http://www.mbusa.com (USA only).

    See also:

    Engine
    Display messages Possible causes/consequences and Solutions Check Coolant Level See Operator's Manual The coolant level is too low. Add coolant, observing the war ...

    Diesel Power
    As if the R-Class' styling didn't make it unique enough, it's also one of the few models in the U.S. with an available clean-diesel engine. The diesel V-6 is rated 25 percent better in EPA-estimat ...

    Voice tags
    Voice tags are entered via the Voice Control System; see the separate operating instructions for the Voice Control System. Adding or changing a voice tag You can add one voice tag per address ...