Mercedes-Benz

Notes on fuel quality for vehicles with diesel engines

General notes

Observe the notes on operating fluids More.

WARNING Risk of fire from fuel mixture

If you mix diesel fuel with petrol, the flash point of the fuel mixture is lower than that of pure diesel fuel.

Never refuel using petrol in diesel engines.

Never mix petrol with diesel fuel.

NOTE Damage due to incorrect fuel

Even small amounts of the wrong fuel could result in damage to the fuel system, the engine and the emission control system.

Only refuel using sulphur-free diesel fuel that conforms to European standard EN 590, or an equivalent specification. In countries without sulphur-free diesel fuel, refuel using only low-sulphur diesel fuel with a sulphur content less than 50 ppm.

Never refuel with the following:

Petrol
Marine diesel
Heating oil
Pure fatty acid methyl ester or vegetable oil
Paraffin or kerosene

If you accidentally refuel with the wrong fuel:

Do not switch on the vehicle.

Consult a qualified specialist workshop.

NOTE Shorter maintenance intervals due to fuel with increased bio-contents

When fuels with increased bio-contents are used, fuel residues with increased separation volume may occur. If fuels with increased bio-contents (compatibility marks B10 and B20) are used on an ongoing basis, this may lead to shorter maintenance intervals for the fuel filter.

If the vehicle is not used for an extended period of time (several weeks):

Refuel the vehicle beforehand with diesel fuel with bio-contents < 10% to avoid possible deposits of bio-contents in the fuel tank.

The following compatibility marks for fuel apply to your vehicle:

For diesel fuel with a maximum of 7% fatty acid methyl ester by volume (bio-diesel)

For diesel fuel with a maximum of 10% fatty acid methyl ester by volume (bio-diesel)

For diesel fuel with a maximum of 20% fatty acid methyl ester by volume (bio-diesel)

Refill with diesel fuel containing a maximum of 10 or 20% fatty acid methyl ester by volume (bio-diesel) only if the corresponding compatibility mark is present in your fuel filler flap.

In accordance with the European standard EN 16942, you will find the compatibility marks for fuel in the following places:

On the vehicle on the information label in the fuel filler flapMore
Throughout Europe on the fuel dispenser or pump nozzles suitable for your vehicle

XTL-compatible vehicles

Refuel with paraffinic diesel fuels to EN 15940 only if the appropriate compatibility mark is present in your fuel filler flap.

Alternatively, you can also refuel with paraffinic diesel fuel (e.g. HVO = hydrogenated vegetable oil, GTL = Gas-To-Liquid) that complies with the European standard EN 15940. Paraffinic diesel fuels are collectively known as XTL.

In accordance with European standard EN 16942, the following fuel compatibility marks apply to your XTL‑compatible vehicle:

For paraffinic diesel fuel

Notes on low outside temperatures

Refuel your vehicle with as much winter diesel fuel as possible at the beginning of winter.

Before switching to winter diesel fuel, the fuel tank should be as empty as possible. When first refuelling with winter diesel fuel, keep the fuel level low (e.g. to reserve level). When refuelling the next time, the fuel tank can be filled normally again.

Further information on fuel is available:

At a filling station
At a qualified specialist workshop