Mercedes-Benz S-Class Saloon 2021, Owner'S Manual

Page: 477 / 621

RRecommended fuel: ecommended fuel: the recommended octane
number for your vehicle can be found in the infor-
mation label in the fuel ller ap (
/
page 225).
All models: All models: If you wish to achieve maximum
engine output, refuel using only super unleaded
petrol with at least 98 RON. Alternatively, you can
also refuel using premium-grade petrol with at
least 95 RON.
All models:
All models: as a temporary measure, if the recom-
mended fuel is not available, you may also use
regular unleaded petrol with an octane number 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
lling station or a quali ed specialist workshop.
Inf Infor ormation on additiv mation on additives in pe es in petrtrol (v ol (vehicles with ehicles with
pe petrtrol engine) ol engine)
Note the instructions about operating uids
(
/
page 471).
* NNOOTE TE 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.
Mercedes-Benz recommends that you use brand-
name fuels with additives.
In some countries, the fuel available may not have
su cient additives. Deposits could build up in the
fuel injection system as a result. In this case, in
consultation with a Mercedes-Benz service
centre, mix the fuel with the cleaning additive rec-
ommended by Mercedes-Benz. Observe the notes
and mixing ratios indicated on the tank.
Inf
Infor ormation on fuel q mation on fuel quality f uality for v or vehicles wit ehicles with a die- h a die-
sel engine sel engine
Gener
General not al notes es
Note the instructions about operating uids
(
/
page 471).
&
W WARNING ARNING Risk of re from fuel mixture
If you mix diesel fuel with petrol, the ash
point of the fuel mixture is lower than that of
pure diesel fuel.
#
Never refuel using petrol in diesel
engines.
#
Never mix petrol with diesel fuel.
* NNOOTE TE 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.
VVehicles wit
ehicles with a diesel par h a diesel particulat ticulatee ltlter: er:
#
Only refuel using sulphur-free diesel fuel
that conforms to European standard
EN 590, or an equivalent speci cation.
In countries without sulphur-free diesel
fuel, refuel using only low-sulphur diesel
fuel with a sulphur content less than
50 ppm.
VVehicle wit ehicle without diesel par hout diesel particulat ticulatee ltlter: er:
474 474 Technical data