Mercedes-Benz S-Class 2020 Operator's Manual page 485

Only use products approved by Mercedes-Benz.
You can identify operating fluids approved by
Mercedes-Benz by the following inscriptions on
the container:
MB-Freigabe (e.g. MB-Freigabe 229.51)
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MB-Approval (e.g. MB-Approval 229.51)
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Further information on approved operating flu‐
ids:
in the Mercedes-Benz Specifications for
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Operating Fluids at http://bevo.mercedes-
benz.com (by entering the designation)
in the Mercedes-Benz Specifications for
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Operating Fluids in the Mercedes-Benz BeVo
app (by entering the designation)
at a qualified specialist workshop
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Fuel
Notes on fuel grades for vehicles with a gas‐
oline engine
Observe the notes on operating fluids
( page 482).
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* NOTE Damage caused by the wrong 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 with low-sulfur unleaded
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fuel.
This fuel may contain up to 10% ethanol by
volume. Your vehicle is suitable for use with
E10 fuel.
Never refuel with one of the following fuels:
Diesel
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Gasoline with more than 10% ethanol by
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volume, e.g. E15, E85, E100
Gasoline with more than 3% methanol by
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volume, e.g. M15, M30, M85, M100
Gasoline with additives containing metal
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If you have accidentally refueled with the
wrong fuel:
Do not switch on the ignition.
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Consult a qualified specialist workshop.
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Technical data 483
If the available fuel is not sufficiently low in sul‐
fur, 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 ( page 189).
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If you want maximum engine output: only
refuel with unleaded premium grade gasoline
with at least 91 AKI/95 RON.
As a temporary measure, if the recommended
fuel is not available, you may also use unleaded
regular gasoline with an octane number of at
least 87 AKI/91 RON.
* NOTE Premature wear through unleaded
regular gasoline
Unleaded regular gasoline can cause the
engine to wear more quickly and impair lon‐
gevity and performance.
If unleaded premium grade gasoline is
unavailable and you have to refuel using
unleaded regular gasoline with 87 AKI/
91 RON: