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382 Technical data
Fuel
▌Information on fuel quality for vehicles with a
gasoline engine
Observe the notes on operating fluids
(
page 380).
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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 spark-ignition
#
engine fuel.
This fuel may contain up to 10% ethanol by vol-
ume. 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 vehicle.
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Consult a qualified specialist workshop.
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If the available fuel is not sufficiently low in sulfur,
it may produce unpleasant odors.
Only refuel with fuel that has at least the octane
number specified in the information label in the
fuel filler flap (
page 149).
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If you want maximum engine output: only refuel
with premium-grade unleaded 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 regular
unleaded gasoline with an octane number of at
least 87 AKI/91 RON. This may reduce engine
output and increase fuel consumption.
Never refuel using gasoline with an even lower
RON.
* NOTE Premature engine wear through
unleaded regular gasoline
Impairment of the longevity and performance
of the engine.
If unleaded premium grade gasoline is unavail-
able and you have to refuel using unleaded
regular gasoline:
Only fill the fuel tank to half full with
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unleaded regular gasoline and refill as
soon as possible with unleaded premium
grade gasoline.
Do not drive at the maximum design
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speed.
Avoid sudden acceleration and engine
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speeds over 3000 rpm.
Further information on fuel is available in the fol-
lowing locations:
At a gas station
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At a qualified specialist workshop
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On the https://www.mbusa.com (USA only)
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