Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual: Fuel

Notes on fuel grades for vehicles with a gasoline engine

Observe the notes on operating fluids.

If the available fuel is not sufficiently low in sulfur, this can produce unpleasant odors.

Only refuel with fuel that has at least the octane number specified in the instruction label in the fuel filler flap.

If you want maximum engine output: only refuel with unleaded premium grade gasoline with an octane number of at least 91 AKI/ 95 RON.

As a temporary measure, if the recommended fuel is not available, you may also refuel with unleaded regular gasoline with at least 87 AKI/ 91 RON. This may reduce engine output and increase fuel consumption.

Never refuel using gasoline with an even lower RON.

Further information on fuel is available at the following locations:

• at a gas station
• at a qualified specialist workshop
• USA only: at http://www.mbusa.com

Information on additives in gasoline

Observe the notes on operating fluids.

Mercedes-Benz recommends that you use fuel brands that have additives.

In some countries, the fuel available may not have sufficient additives. Residue could build up in the fuel injection system as a result. In this case, in consultation with an authorized Mercedes-Benz Center, the fuel may be mixed with the cleaning additive recommended by Mercedes-Benz. Be sure to observe the notes and mixing ratios specified on the container.

Tank content and fuel reserve

The total capacity of the fuel tank may vary, depending on the vehicle equipment.

Capacity