Mercedes-Benz S-Class Coupe 2018 Operator's Manual page 398

396 Technical data
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
Information on fuel grades for vehicles with
a gasoline engine
Observe the notes on operating fluids
( page 395).
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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.
Your vehicle is suitable for use with E10 fuel.
Do not refuel using:
Diesel
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E15, E85, E100
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Gasoline containing methanol (M15, M30,
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M85, M100)
Gasoline with additives containing metal
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If you accidentally refuel with the wrong fuel:
Do not switch the ignition on.
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Consult a qualified specialist workshop.
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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 140).
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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 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:
Only fill the fuel tank to half full with
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unleaded regular gasoline and top up as