Mercedes-Benz S-Class 2020 Owner's Manual page 496

petrol with more than 10% ethanol by vol‐
R
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
R
If you have accidentally refuelled with the
wrong fuel:
do not switch the ignition on.
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consult a qualified specialist workshop.
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According to European standard EN 16942 you
can find the compatibility indications at the fol‐
lowing locations:
On the vehicle on the information label in the
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fuel filler flap
On the fuel dispenser or pump nozzle suita‐
R
ble for 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
information label in the fuel filler flap
( page 217).
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All models: if you wish to achieve maximum
engine output, refuel using only super unleaded
petrol with at least 98 RON. Alternatively, you
Technical data 493
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 obtained at a
filling station or a qualified specialist workshop.
Information on additives in petrol
Observe the notes on operating fluids
( page 491).
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* 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.
Mercedes-Benz recommends that you use
brand-name fuels with additives.