Mercedes-Benz S-Class Owner's Manual page 534

532 Technical data
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
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volume, 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 on the ignition.
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consult a qualified specialist workshop.
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According to European standard EN 16942 you
can find the following compatibility indications
for fuel:
on the instruction label on the fuel filler flap
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of your vehicle
on the fuel pump or pump nozzle suitable for
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your vehicle throughout Europe
1
For petrol with maximum 5% ethanol by vol‐
ume
2
For petrol with maximum 10% ethanol by vol‐
ume
If the available fuel is not sufficiently low in sul‐
phur, this can produce unpleasant odours.
Recommended fuel: the recommended octane
number for your vehicle can be found in the
instruction label in the fuel filler flap
( page 209).
→
S 450 4MATIC, S 450, S 450 4MATIC
Mercedes-Maybach: only refuel using super
unleaded petrol with at least 98 RON, if you wish
to achieve maximum engine output. Alterna‐
tively, you can also refuel using premium grade
petrol with at least 95 RON.
All models: as a temporary measure, if the rec‐
ommended fuel is not available, you may also
use regular unleaded petrol with an octane num‐
ber of at least 91 RON. This may reduce engine
output and increase fuel consumption.
Never refuel using petrol with a lower RON.
Further information on fuel can be found:
at a filling station
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at a qualified specialist workshop
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Information on additives in petrol
Observe the notes on operating fluids
( page 530).
→
* NOTE Damage from use of unsuitable
additives
Even small amounts of the wrong additive
may lead to malfunctions occurring.
Only add cleaning additives recommen‐
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ded by Mercedes-Benz to the fuel.