Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual page 210

208 Driving and parking
To avoid creating another electrostatic
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charge, do not get into the vehicle again
during the refuelling process.
& WARNING Risk of fire from fuel mixture
Vehicles with a diesel engine:
If you mix diesel fuel with petrol, the flash
point of the fuel mixture is lower than that of
pure diesel fuel.
While the engine is running, component parts
in the exhaust system may overheat without
warning.
Never refuel using petrol.
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Never mix petrol with diesel fuel.
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* NOTE Damage caused by the wrong fuel
Vehicles with a petrol engine:
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 unleaded, sulphur-free
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petrol that conforms to European
EN 228, or an equivalent specification.
Fuel of this specification may contain up to
10% ethanol. Your vehicle is suitable for use
with E10 fuel.
Never refuel with one of the following fuels:
diesel
R
regular petrol with an octane number
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lower than 91 RON
petrol with more than 10% ethanol by vol-
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ume, e.g. E15, E20, E85, E100
petrol with more than 3% methanol by vol-
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ume, e.g. M15, M30
petrol with additives containing metal
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If you have accidentally refuelled with the
wrong fuel:
do not switch the ignition on.
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Consult a qualified specialist workshop.
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P223 0288 02
* NOTE Damage caused by the wrong fuel
Vehicles with a diesel engine:
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
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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 using any of the following fuels:
petrol
R
marine diesel
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heating oil
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pure bio-diesel fuel or vegetable oil
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paraffin or kerosene
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If you accidentally refuel with the wrong fuel:
Do not switch the ignition on.
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