Mercedes-Benz GLS 2020 Operator's Manual page 175

Before you open the fuel filler cap or
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take hold of the pump nozzle, touch the
metallic vehicle body.
This discharges any electrostatic charge
that may have built up.
Do not get into the vehicle again during
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the refueling process.
Otherwise, electrostatic charge can
build up again.
* NOTE Damage caused by the wrong fuel
Vehicles with a gasoline engine:
Even small amounts of the wrong fuel could
result in damage to the fuel system, the
engine and the emission control system.
The RON requirement is located in the
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fuel filler flap.
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.
Never refuel using any of the following fuels:
Diesel
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Gasoline with more than 10% ethanol by
R
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 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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* NOTE Do not use diesel to refuel vehi‐
cles with a gasoline engine
If you have accidentally refueled with the
wrong fuel:
Do not switch the ignition on. Otherwise
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fuel can enter the engine.
Even small amounts of the wrong fuel
could result in damage to the fuel system
and the engine. The repair costs are high.
Driving and parking 173
Consult a qualified specialist workshop.
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Have the fuel tank and fuel lines
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drained completely.
* NOTE Damage to the fuel system caused
by overfilled fuel tanks
Only fill the fuel tank until the pump
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nozzle switches off.
* NOTE Fuel may spray out when you
remove the fuel pump nozzle
Only fill the fuel tank until the pump
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nozzle switches off.
Requirements
Plug-in-hybrid: for vehicles with a gasoline
engine, observe the notes in the Supplement.
Otherwise, you may fail to recognize dangers.
The vehicle is unlocked ( page 66).
/
R
% Do not get into the vehicle again during the
refueling process. Otherwise, electrostatic
charge could build up again.