Mercedes-Benz GLC 2019, Owner'S Manual

Page: 519 / 645

Never refuel with one of the following fuels:
R
diesel
R
regular petrol with an octane number
lower than 91 RON
R
petrol with more than 10% ethanol by vol‐
ume, e.g. E15, E20, E85, E100
R
petrol with more than 3% methanol by
volume, e.g. M15, M30
R
petrol with additives containing metal
If you have accidentally refuelled with the
wrong fuel:
#
do not switch on the ignition.
#
consult a qualified specialist workshop.
The following compatibility indications for fuel
apply to your vehicle:
1 For petrol with maximum 5% ethanol by vol‐
ume
2
For petrol with maximum 10% ethanol by vol‐
ume
According to European standard EN 16942 you
can find the compatibility indications at the fol‐
lowing locations:
R
on the instruction label on the fuel filler flap
R
on the fuel pump or pump nozzle suitable for
your vehicle throughout Europe
If the available fuel is not sufficiently low in sul‐
phur, this can produce unpleasant odours.
The recommended octane number for your vehi‐
cle can also be found on the instruction label in
the fuel filler flap (
/
page 175).
As a temporary measure, if the recommended
fuel is not available, you may also use regular
unleaded petrol with at least 91 RON. This may
reduce engine output and increase fuel con‐
sumption.
Never refuel using petrol with an even 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 514).
* NOTE Damage from use of unsuitable
additives
Even small amounts of the wrong additive
may lead to malfunctions occurring.
#
Only add cleaning additives recommen‐
ded by Mercedes-Benz to the fuel.
516 Technical data