MERCEDES-BENZ C-CLASS ESTATE 2021 Owners Manual

ManufacturerModel designa-
tionRadio
equipment
approval
number (if
available)MARQUARDTMS5 (locking sys-
tem)!

Vehicle identiNcation plate (example: Kuwait)1Vehicle manufacturer2Place of manufacture3Manufacturing date4Vehicle model5VINVehicle identiNcation plate (example: all other
countries)1Vehicle manufacturer2EU general operating permit number (only for
certain countries)3VIN (vehicle identiNcation number)4Maximum permissible gross vehicle weight
(kg)5Maximum permissible gross weight of vehiclecombination (kg) (only for speciNc countries)6Maximum permissible front axle load (kg)7Maximum permissible rear axle load (kg)8Paint code%The data shown in the illustration is example
data.450Technical data

VIN below the front right-hand seat1Imprinted VIN (vehicle identiNcation number)2Floor coveringVIN at the lower edge of the windscreen1VIN (vehicle identiNcation number) as label
The VIN as a label at the lower edge of the wind-
screen is only available in some countries.
Engine number
The engine number is stamped into the crank- case. Further information can be obtained at a
qualiNed specialist workshop.
Operating Ouids
Notes on operating Ouids
&WARNING Risk of injury from operating
Ouids harmful to your health
Operating Ouids may be poisonous and harm-
ful to your health.
Observe the text on the original contain- ers when using, storing or disposing of
operating Ouids.Always store operating Ouids sealed in
their original containers.Always keep children away from operat-
ing Ouids.+ENVIRONMENTAL NOTE Environmental
pollution due to disposing of operating Ou-
ids in a non-environmentally responsible
manner
Operating Ouids include the following:
= fuels
Technical data451

=exhaust gas asertreatment additives, e.g.
AdBlue n
= lubricants
Incorrect disposal of operating Ouids can
cause considerable damage to the environ- ment.Dispose of operating Ouids in an environ-
mentally responsible manner.
Operating Ouids include the following:
= fuels
= DeNOx agent AdBlue n
for exhaust gas aser-
treatment
= lubricants
= coolant
= brake Ouid
= windscreen washer Ouid
= climate control system refrigerant
Only use products approved by Mercedes-Benz.
Damage caused by the use of products that have
not been approved is not covered by the
Mercedes-Benz warranty or goodwill gestures.
The operating Ouids approved by Mercedes-Benz
can be identiNed by the following inscriptions on
the container:
= MB-Freigabe (e.g. MB-Freigabe 229.51)
= MB-Approval (e.g. MB-Approval 229.51)
Further information on approved operating Ouids
= in the Mercedes-Benz SpeciNcations for Oper-
ating Fluids by entering the designation
- at https://bevo.mercedes-benz.com
- in the Mercedes-Benz BeVo App
= At a qualiNed specialist workshop&WARNING Risk of Nre or explosion from
fuel
Fuels are highly Oammable.
Fire, naked Oames, smoking and creating
sparks must be avoided.Before and during refuelling, switch oM
the vehicle and, if Ntted, the stationary
heater.&WARNING Risk of injury from fuels
Fuels are poisonous and hazardous to your
health.
Do not swallow fuel or let it come into
contact with skin, eyes or clothing.Do not inhale fuel vapour.Keep children away from fuel.Keep doors and windows closed during
the refuelling process.
If you or other people come into contact with
fuel, observe the following:
Immediately rinse fuel oM your skin with
soap and water.If fuel comes into contact with your eyes, immediately rinse them thoroughly with
clean water. Seek medical attention
immediately.If you swallow fuel, seek medical atten-
tion immediately. Do not induce vomit-
ing.452Technical data

Change immediately out of clothing thathas come into contact with fuel.Flexible-fuel vehicles can be refuelled with the fol-
lowing fuel types:
= unleaded petrol
= E85 fuel
= a mixture of E85 fuel and unleaded petrol
Flexible-fuel vehicles can be identiNed by the
Ethanol up to E85 sticker on the inside of the fuel
Nller Oap.
Depending on the country, the fuels you can use in your vehicle may diMer from the information in
the Owner's Manual. The fuels that have been
approved for your vehicle can be found on the
instruction label on the inside of the fuel Nller Oap.
Fuel

q Information on fuel quality for vehicles with a
petrol engine
Observe the notes on operating Ouids
(  page 451).
*NOTE 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.
Only refuel using unleaded, sulphur-free
spark-ignition engine fuel that conforms
to European EN 228, or an equivalent
speciNcation.
Fuel of this speciNcation may contain up to
10% ethanol by volume. Your vehicle is suita-
ble for use with E10 fuel.
See the information label in fuel Nller Oap
for other compatible fuels .
Never refuel with one of the following fuels:
= Diesel
= Regular petrol with an octane number
lower than 91 RON
= Petrol with more than 3% methanol by vol-
ume, e.g. M15, M30
= Petrol with additives containing metal
If you have accidentally refuelled with the
wrong fuel:Do not switch on the vehicle.Consult a qualiNed specialist workshop.Compatibility indications for fuel:1For petrol with maximum 5% ethanol by vol-
ume2For petrol with maximum 10% ethanol by vol- ume
The compatibility indications for fuel on the vehi-
cle according to the European standard EN 16942 can be found on the information label in the fuel
Technical data453

Nller Oap or on the fuel dispenser or pump nozzle
suitable for your vehicle throughout Europe.
If the available fuel is not suPciently low in sul-
phur, this can produce unpleasant odours.
The recommended octane number can be found
on the information label on the fuel Nller Oap
(  page 176).
If the recommended fuel is not available, you may also temporarily 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 an even lower RON. Further information on fuel can be obtained at a
Nlling station or a qualiNed specialist workshop.

q Information on additives in petrol (vehicles with
petrol engine)
Observe the notes on operating Ouids
(  page 451).*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.
Mercedes-Benz recommends that you use brand-
name fuels with additives.
In some countries, the fuel available may not have
suPcient additives. Deposits could build up in the
fuel injection system as a result. In this case, in
consultation with a Mercedes-Benz servicecentre, mix the fuel with the cleaning additive rec-
ommended by Mercedes-Benz. Observe the notes and mixing ratios indicated on the tank.

q Information on fuel quality for vehicles with a
diesel engine
General notes
Observe the notes on operating Ouids
(  page 451).
&WARNING Risk of Nre from fuel mixture
If you mix diesel fuel with petrol, the Oash
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.*NOTE 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.
Vehicles with a diesel particulate Nlter
Only refuel using sulphur-free diesel fuel
that conforms to European standard
EN 590, or an equivalent speciNcation.
In countries without sulphur-free diesel
fuel, refuel using only low-sulphur diesel
fuel with a sulphur content less than
50 ppm.
Vehicle without diesel particulate Nlter
454Technical data

Only refuel using diesel fuel with a sul-
phur content less than 500 ppm.
Never refuel with one of the following fuels:
= Petrol
= Marine diesel
= Heating oil
= Pure fatty acid methyl ester or vegetable
oil
= ParaPn or kerosene
If you have accidentally refuelled with the
wrong fuel:
Do not switch on the vehicle.Consult a qualiNed specialist workshop.
The following compatibility indication for fuel
applies to your vehicle:
1For diesel fuel with a maximum of 7% by vol-ume bio-diesel (fatty acid methyl ester)
According to European standard EN 16942 youcan Nnd the compatibility indications at the fol-
lowing locations:
= On the vehicle on the information label in the
fuel Nller Oap ( page 176)
= On the fuel dispenser or pump nozzle suitable
for your vehicle throughout Europe
Information on low outside temperatures
Refuel your vehicle with as much winter diesel fuel
as possible at the beginning of winter.
Before changing over to winter diesel fuel, the fuel
tank should be empty, if possible. Keep the fuel level low for the Nrst refuelling with winter diesel
fuel, e.g. to reserve level. The fuel tank can be Nl-
led as usual when next refuelling.
Further information on fuel can be obtained at a
Nlling station or a qualiNed specialist workshop.

q Tank content and reserve fuel
The total capacity of the fuel tank may vary, depending on the vehicle equipment.ModelTotal capacityC 200
C 300 d50.0 litres or
66.0 litresAll other models40.0 litres or
66.0 litresModelof which reserve fuelAll models7.0 litresTechnical data455

AdBluen
(vehicles with a diesel engine only)

q Notes on AdBlue n
Observe the notes on operating Ouids
(  page 451).
AdBlue n
is a water-soluble Ouid for the NOx
exhaust gas asertreatment of diesel engines.
It may be improper or punishable in some coun-
tries to operate a vehicle that uses no AdBlue n
or
one that does not comply with the speciNcations
of these operating instructions.
*NOTE Malfunctions due to the dilution of
AdBlue n
or the use of additive-enhanced
AdBlue n
The function of the NOx exhaust gas
aser-
treatment can be impaired by the use of
unsuitable denoxiNcation agents.
Only use AdBlue n
in accordance with
ISO 22241.Do not dilute AdBlue n
with water.Do not use additive-enhanced AdBlue n
.*NOTE Damage and malfunctions due to
impurities in AdBlue n
Consequences of impurities in AdBlue n
:
= increased emission values
= damage to the catalytic converter
= NOx exhaust gas asertreatment malfunc-
tions
Avoid impurities in AdBlue n
.
AdBlue n
residues crystallise aser a period of
time, and contaminate the surfaces with which
they come into contact. Clean the dirty surfaces
with water as soon as possible.
When you open the AdBlue n
tank, small amounts
of ammonia vapour may escape. Do not inhale any ammonia vapours that may be released. Only
Nll the AdBlue n
tank in well-ventilated areas.

q AdBlue n
Nlling capacity and consumption
ModelTotal capacityAll models23.0 litresAdBlue n
consumption
The average AdBlue n
consumption is between 1%
and 5% of fuel consumption. Like fuel consump-
tion, AdBlue n
consumption is highly dependent
upon driving style and operating conditions. For this reason, your vehicle's actual consumption Ng-
ures under day-to-day operating conditions may
diMer from the consumption Ngures calculated.
The frequency at which you will have to top up
AdBlue n
will also vary. Have the AdBlue n
supply
checked at a qualiNed specialist workshop before
making journeys outside of Europe. Before a lon-
ger stay outside of Europe, consult a qualiNed
specialist workshop.
AdBlue n
range and Nll level
You can have the AdBlue n
range and level dis-
played in the driver's display.
%The AdBlue n
range shown depends strongly
on the driving style and operating conditions.
The actual range can therefore deviate from
the range currently displayed in the driver's display.
The information supplied in the Owner's Manual
regarding the reserve quantity at the Nrst warning
456Technical data

in the driver's display and on the minimum top-upquantity when the AdBlue n
tank is empty is also
to be understood as guide values.
Engine oil

q Notes on engine oil
Observe the notes on operating Ouids
(  page 451).
*NOTE Engine damage caused by an incor-
rect oil Nlter, incorrect oil or additivesDo not use engine oils or oil Nlters other
than those which meet the speciNcationsnecessary for the prescribed service
intervals.Do not alter the engine oil or oil Nlter in
order to achieve longer change intervals than prescribed.Do not use additives.Have the engine oil changed aser the
prescribed intervals.
Mercedes-Benz recommends that you have the oil
change carried out at a qualiNed specialist work-
shop.
Only use engine oils approved by Mercedes-Benz.
Petrol engines: For certain countries, diMerent
engine oils can be used in conjunction with reduced maintenance intervals.
%Further information on diMerent engine oils
can be obtained at a qualiNed specialist work-
shop.
q Quality and capacity of engine oilPetrol enginesMB-Freigabe or MB-
ApprovalAll models229.71*, 229.72
Vehicles with petrol engines: only use engine oils
of the SAE 0W-20 viscosity classes.
Diesel enginesMB-Freigabe or MB- ApprovalAll models229.52, 229.61
229.71*
* recommended for lowest possible fuel con-
sumption (lowest SAE viscosity class in each case; observe possible restrictions of the
approved SAE viscosity classes)
To achieve the lowest possible fuel consumption, it is recommended to use the engine oil speciNca-
tions marked in the table for the lowest SAE vis-
cosity class. Possible restrictions of the approved SAE viscosity classes must be observed.
Technical data457

%If the engine oils listed in the table are not
available, you may add a maximum of 1.0 litre
of the following engine oils once only.
Engine oils for one-time Nlling only in exceptional
cases:
= Vehicles with a petrol engine: MB-Freigabe or
MB-Approval 229.31 or ACEA C3
= Vehicles with a diesel engine: MB-Freigabe or
MB-Approval 229.51 or ACEA C3
Engine oil Nlling capacity
ModelCapacityAll models6.0 l
The speciNed Nlling capacity refers to an oil
change with the oil Nlter.
Notes on brake Ouid
Observe the notes on operating Ouids
(  page 451).
&WARNING Risk of an accident due to
vapour pockets forming in the brake sys- tem
The brake Ouid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake Ouid. If the boiling point is too low,
vapour pockets may form in the brake system when the brakes are applied hard.
This impairs the braking eMect.
Have the brake Ouid renewed at the
speciNed intervals.Have the brake Ouid regularly replaced at a quali-
Ned specialist workshop.
Only use a brake Ouid approved by Mercedes-
Benz according to MB-Freigabe or MB-Approval 331.0.
Coolant

q Notes on coolant
Observe the notes on operating Ouids
(  page 451).
&WARNING Risk of Nre