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Fuel
Notes on fuel grades for vehicles with a gas‐
oline engine
Observe the notes on operating fluids
(/ page 451).
*
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
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:
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Diesel
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Gasoline with more than 10% ethanol by
volume, e.g. E15, E85, E100
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Gasoline with more than 3% methanol by
volume, e.g. M15, M30, M85, M100
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Gasoline with additives containing metal
If you have accidentally refueled with the
wrong fuel:
#
Do not switch on the ignition.
#
Consult a qualified specialist workshop.
If the available fuel is not suff iciently 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 145).
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 refuel with
unleaded regular gasoline with at least 87 AKI/
91 RON. This may reduce engine output and
increase fuel consumption.
Never refuel using gasoline with a lower 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 grad e gasoline is
unavailable and you have to refuel using
unleaded regular gasoline:
#
Only fill the fuel tank to half full with
unleaded regular gasoline and fill up as
soon as possible with unleaded pre‐
mium grade gasoline.
#
Do not drive at the maximum design
speed.
#
Avoid sudden acceleration and engine
speeds over 3000 rpm.
Further information on fuel is available at the fol‐
lowing locations:
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at a gas station
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at a qualified specialist workshop
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USA only: at http://www.mbusa.com
Technical dat a
453
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