2014-2021 Mercedes C Class 4 Door Technical data -> Operating fluids User Manual
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Technical data -> Operating fluids for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

Technical data 429  
VIN below right-hand front seat  
VIN at the lower edge of the windscreen  
Operating fluids  
Notes on operating fluids  
NOTE Mercedes-AMG vehicles  
*
#
Observe the notes in the Supplement.  
You could otherwise fail to recognise  
dangers.  
&
WARNING Risk of injury from operating  
fluids harmful to your health  
Operating fluids may be poisonous and harm‐  
ful to your health.  
1
VIN (vehicle identification number) as label  
The VIN as a label at the lower edge of the wind‐  
screen is only available in some countries.  
#
Observe the text on the original con‐  
tainers when using, storing or disposing  
of operating fluids.  
Engine number  
The engine number is stamped into the crank‐  
case. You can obtain further information from  
any qualified specialist workshop.  
#
Always store operating fluids sealed in  
1
2
Imprinted VIN (vehicle identification number)  
Floor covering  
their original containers.  
#
Always keep children away from operat‐  
ing fluids.  
430 Technical data  
R
R
MB-Freigabe (e.g. MB-Freigabe 229.51)  
MB-Approval (e.g. MB-Approval 229.51)  
&
ENVIRONMENTAL NOTE Environmental  
pollution caused by environmentally irre‐  
sponsible disposal  
WARNING Risk of injury from fuels  
+
Fuels are poisonous and hazardous to your  
health.  
Further information on approved operating flu‐  
ids:  
#
Dispose of operating fluids in an envi‐  
ronmentally responsible manner.  
#
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.  
R
in the Mercedes-Benz Specifications for  
Operating Fluids by entering the designation  
#
Operating fluids include the following:  
-
#
R
fuels  
-
in the Mercedes-Benz BeVo App  
#
DeNOx agent AdBlue® for exhaust gas after‐  
treatment  
R
R
at a qualified specialist workshop  
R
lubricants  
coolant  
brake fluid  
windscreen washer fluid  
If you or other people come into contact with  
fuel, observe the following:  
&
WARNING Risk of fire or explosion from  
fuel  
R
#
Immediately rinse fuel off your skin with  
soap and water.  
R
Fuels are highly flammable.  
#
R
Fire, naked flames, smoking and crea‐  
tion of sparks must be avoided.  
Switch off the ignition and, if available,  
the stationary heater, before and while  
refuelling the vehicle.  
#
If fuel comes into contact with your  
R
climate control system refrigerant  
eyes, immediately rinse them thor‐  
oughly with clean water. Seek medical  
attention immediately.  
#
Only use products approved by Mercedes-Benz.  
Damage caused by the use of products that have  
not been approved is not covered by the  
#
If you swallow fuel, seek medical atten‐  
Mercedes-Benz warranty or goodwill gestures.  
tion immediately. Do not induce vomit‐  
ing.  
The operating fluids approved by Mercedes-Benz  
can be identified by the following inscriptions on  
the container:  
Technical data 431  
#
Change immediately out of clothing that  
has come into contact with fuel.  
Never refuel with one of the following fuels:  
R
diesel  
R
regular petrol with an octane number  
lower than 91 RON  
Fuel  
R
petrol with more than 10% ethanol by vol‐  
Information on fuel grades for vehicles with  
petrol engines  
Observe the notes on operating fluids  
(/ page 429).  
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  
1
2
For petrol with maximum 5% ethanol by vol‐  
ume  
For petrol with maximum 10% ethanol by vol‐  
ume  
NOTE Damage caused by the wrong fuel  
*
If you have accidentally refuelled with 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.  
#
do not switch the ignition on.  
#
consult a qualified specialist workshop.  
According to European standard EN 16942 you  
can find the compatibility indications at the fol‐  
lowing locations:  
#
Only refuel using unleaded, sulphur-free  
petrol that conforms to European  
The following compatibility indications for fuel  
apply to your vehicle:  
EN 228, or an equivalent specification.  
R
on the vehicle on the information label on the  
fuel filler flap (/ page 170).  
on the fuel pump or pump nozzle suitable for  
your vehicle throughout Europe.  
Fuel of this specification may contain up to  
10% ethanol by volume. Your vehicle is suita‐  
ble for use with E10 fuel.  
R
If the available fuel is not sufficiently low in sul‐  
phur, this can produce unpleasant odours.  
432 Technical data  
The recommended octane number for your vehi‐  
cle can also be found on the information label in  
the fuel filler flap (/ page 170).  
As a temporary measure, if the recommended  
fuel is not available, you may also use regular  
unleaded petrol with at least:  
#
#
#
Only add cleaning additives recommen‐  
ded by Mercedes-Benz to the fuel.  
Never refuel using petrol in diesel  
engines.  
Never mix petrol with diesel fuel.  
Mercedes-Benz recommends that you use  
brand-name fuels with additives.  
In some countries, the fuel available may not  
have sufficient additives. Residue could build up  
in the fuel injection system as a result. In this  
case, in consultation with a Mercedes-Benz  
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.  
R
C 180: 93 RON  
R
All other models: 91 RON  
This may reduce engine output and increase fuel service centre, mix the fuel with the cleaning  
consumption.  
Never refuel using petrol with an even lower  
RON.  
#
Only refuel using sulphur-free diesel  
additive recommended by Mercedes-Benz.  
Observe the notes and mixing ratios indicated  
on the tank.  
fuel that conforms to European stand‐  
ard EN 590, or an equivalent specifica‐  
tion.  
In countries without sulphur-free diesel  
fuel, refuel using only low-sulphur diesel  
fuel with a sulphur content less than  
50 ppm.  
Vehicles without diesel particulate  
filter: refuel using only diesel fuel with  
Information on fuel grades for vehicles with  
a diesel engine  
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 429).  
General notes  
Observe the notes on operating fluids  
(/ page 429).  
#
a sulphur content less than 500 ppm.  
&
NOTE Damage from use of unsuitable  
additives  
WARNING Risk of fire from fuel mixture  
*
Never refuel with one of the following fuels:  
If you mix diesel fuel with petrol, the flash  
point of the fuel mixture is lower than that of  
pure diesel fuel.  
R
petrol  
Even small amounts of the wrong additive  
may lead to malfunctions occurring.  
Technical data 433  
Before changing over to winter diesel fuel, the  
fuel tank should be empty, if possible. When first  
refuelling with winter diesel fuel, only refuel  
using a small amount, e.g. to reserve level. The  
fuel tank can be filled as usual when next refuel‐  
ling.  
R
R
R
R
marine diesel  
heating oil  
pure bio-diesel fuel or vegetable oil  
paraffin or kerosene  
If you have accidentally refuelled with the  
wrong fuel:  
Further information on fuel can be obtained at a  
filling station or a qualified specialist workshop.  
#
Do not switch the ignition on.  
Consult a qualified specialist workshop.  
Tank content and reserve fuel  
The total capacity of the fuel tank may vary,  
depending on the vehicle equipment.  
#
1
For diesel fuel with a maximum of 7% by vol‐  
ume bio-diesel (fatty acid methyl ester)  
The following compatibility indication for fuel  
applies to your vehicle:  
According to European standard EN 16942 you  
can find the compatibility indications at the fol‐  
lowing locations:  
R
on the vehicle on the information label in the  
fuel filler flap (/ page 170)  
R
on the fuel pump 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.  
434 Technical data  
Capacity  
Model  
Model  
of which reserve  
fuel  
Only use AdBlue® in accordance with  
ISO 22241.  
#
Total capacity  
Do not dilute AdBlue® with water.  
Do not use additive-enhanced AdBlue®.  
#
#
C 300 d  
C 300 d 4MATIC  
50.0 litres  
or  
All models  
7.0 litres  
AdBlue®  
66.0 litres  
NOTE Damage and malfunctions due to  
*
Notes on AdBlue®  
Observe the notes on operating fluids  
(/ page 429).  
AdBlue® is a water-soluble fluid for the NOx  
exhaust gas aftertreatment of diesel engines.  
impurities in AdBlue®  
C 200 (205.080)  
C 200 4MATIC  
(205.079)  
66.0 litres  
Consequences of impurities in AdBlue®:  
R
increased emission values  
damage to the catalytic converter  
C 300  
R
C 300 d  
R
NOx exhaust gas aftertreatment malfunc‐  
It may be improper or punishable in some coun‐  
tries to operate a vehicle that uses no AdBlue®  
or one that does not comply with the specifica‐  
tions of these operating instructions.  
C 300 4MATIC  
C 300 d 4MATIC  
C 400 4MATIC  
tions  
Avoid impurities in AdBlue®.  
#
AdBlue® residues crystallise after a period of  
time, and contaminate the surfaces with which  
they come into contact. Clean the dirty surfaces  
with water as soon as possible.  
All other models  
41.0 litres  
or  
66.0 litres  
NOTE Malfunctions due to the dilution of  
AdBlue® or the use of additive-enhanced  
AdBlue®  
*
When you open the AdBlue® tank, small  
amounts of ammonia vapour may escape. Do  
not inhale any ammonia vapours that may be  
The function of the NOx exhaust gas after‐  
treatment can be impaired by the use of  
unsuitable denoxification agents.  
Technical data 435  
AdBlue® range and fill level  
released. Only fill the AdBlue® tank in well-venti‐  
lated areas.  
The AdBlue® fill level and range can be displayed  
via the on-board computer. The AdBlue® range  
shown depends strongly on the driving style and  
operating conditions. The actual range can  
therefore deviate from the range currently dis‐  
played in the on-board computer. The informa‐  
tion supplied in the Owner's Manual regarding  
the reserve quantity at the first display warning  
and on the minimum top-up quantity when the  
fuel tank is empty is also to be understood as  
guide values.  
AdBlue® filling capacity and consumption  
Model  
Total capacity  
All models  
25 litres  
AdBlue® consumption  
The average AdBlue® consumption is between  
1% and 5% of fuel consumption. Like fuel con‐  
sumption, AdBlue® consumption is highly  
NOTE Engine damage caused by an  
incorrect oil filter, incorrect oil or addi‐  
tives  
*
dependent upon driving style and operating con‐  
ditions. For this reason, your vehicle's actual  
consumption figures under day-to-day operating  
conditions may differ from the consumption fig‐  
ures calculated. The frequency at which you will  
have to top up AdBlue® will also vary. Have the  
AdBlue® supply checked at a qualified specialist  
workshop before making journeys outside of  
Europe. Before a longer stay outside of Europe,  
consult a qualified specialist workshop.  
Engine oil  
#
Do not use engine oils or oil filters  
which do not correspond to the specifi‐  
cations explicitly prescribed for the  
service intervals.  
Do not alter the engine oil or oil filter in  
order to achieve longer change intervals  
than prescribed.  
Do not use additives.  
Have the engine oil renewed at regular  
intervals.  
Notes on engine oil  
Observe the notes on operating fluids  
(/ page 429).  
#
#
#
436 Technical data  
Quality and capacity of engine oil  
MB-Freigabe or MB-Approval  
Mercedes-Benz recommends that you have the  
oil change carried out at a qualified specialist  
workshop.  
Only use engine oils approved by Mercedes-  
Benz.  
Petrol engines: for certain countries, different  
engine oils can be used in conjunction with  
reduced maintenance intervals.  
% Further information on different engine oils  
can be obtained at a qualified specialist  
workshop.  
* 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 specifi‐  
cations marked in the table for the lowest SAE  
viscosity class. Possible restrictions of the  
approved SAE viscosity classes must be  
observed.  
Petrol engines  
Engine oil specifica‐  
tions  
C 180  
229.3, 229.5, 229.51,  
229.52  
229.6*  
C 400 4MATIC  
229.5  
% 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.  
229.6*  
All other models  
229.51, 229.52,  
229.61  
Engine oils for one-time filling only in exceptional  
cases:  
R vehicles with a petrol engine:  
229.71*  
MB-Freigabe or MB-Approval  
Diesel engines  
Engine oil specifica‐  
-
C 160, C 180: MB-Freigabe or MB-  
Approval 229.3, 229.51, 229.52 or  
ACEA A3/B4  
C 400 4MATIC: MB-Freigabe or MB-  
Approval 229.3 or ACEA A3/B4  
tions  
All models  
228.51, 229.31,  
229.51, 229.52,  
229.61  
-
229.71*  
Technical data 437  
Have the brake fluid regularly replaced at a  
qualified specialist workshop.  
Only use a brake fluid approved by Mercedes-  
Benz according to MB-Freigabe or MB-Approval  
331.0.  
-
all other models:MB-Freigabe or MB-  
Approval 229.31 or ACEA C3  
Model  
Replacement  
amount  
R
vehicles with a diesel engine: ACEA C3  
C 200 4MATIC  
C 300 4MATIC  
6.0 litres  
The following values refer to an oil change,  
including the oil filter.  
All other models  
6.3 litres  
Coolant  
Replacement amount  
Model  
Replacement  
amount  
Notes on coolant  
Observe the notes on operating fluids  
(/ page 429).  
Notes on brake fluid  
Observe the notes on operating fluids  
(/ page 429).  
C160 (205.044)  
C180 (205.040)  
7.0 litres  
&
WARNING Risk of fire‑ and injury from  
antifreeze  
&
WARNING Risk of an accident due to  
vapour pockets forming in the brake sys‐  
tem  
C160 (205.075)  
C180 (205.076)  
C 200  
6.6 litres  
If antifreeze comes into contact with hot  
component parts in the engine compart‐  
ment, it may ignite.  
The brake fluid constantly absorbs moisture  
from the air. This lowers the boiling point of  
the brake fluid. If the boiling point is too low,  
vapour pockets may form in the brake sys‐  
tem when the brakes are applied hard.  
C 300  
#
Allow the engine to cool down before  
you top up the antifreeze.  
C 300 d  
C 300 d 4MATIC  
6.8 litres  
6.5 litres  
#
Make sure that no antifreeze spills out  
next to the filler opening.  
This impairs the braking effect.  
C 400 4MATIC  
#
Thoroughly clean the antifreeze from  
#
component parts before starting the  
vehicle.  
Have the brake fluid renewed at the  
specified intervals.  
438 Technical data  
#
#
Observe the instructions in the  
Mercedes-Benz Specifications for Oper‐  
ating Fluids 310.1.  
Make sure that no windscreen washer  
concentrate spills out next to the filler  
opening.  
NOTE Damage caused by incorrect cool‐  
ant  
*
#
Only use coolant that has been pre‐  
mixed with the required antifreeze pro‐  
tection.  
Have the coolant regularly replaced at a qualified  
specialist workshop.  
Proportion of antifreeze concentrate in the  
engine cooling system:  
NOTE Damage to the exterior lighting  
due to unsuitable windscreen washer  
fluid  
*
Information on coolant is available at the fol‐  
lowing locations:  
Unsuitable windscreen washer fluids may  
damage the plastic surface of the exterior  
lighting.  
R
in the Mercedes-Benz Specification for  
Operating Fluids 310.1  
in the Mercedes-Benz BeVo app  
at a qualified specialist workshop  
R
a minimum of 50% (antifreeze protection  
down to approximately -37°C)  
-
R
a maximum of 55% (antifreeze protection  
down to -45°C)  
#
Only use windscreen washer fluids  
-
which are also suitable for use on plas‐  
tic surfaces, e.g. MB SummerFit or MB  
WinterFit.  
R
Notes on windscreen washer fluid  
NOTE Overheating at high outside tem‐  
peratures  
*
Observe the notes on operating fluids  
NOTE Blocked spray nozzles caused by  
mixing windscreen washer fluids  
*
(/ page 429).  
If an inappropriate coolant is used, the  
engine cooling system is not sufficiently pro‐  
tected against overheating and corrosion at  
high outside temperatures.  
&
WARNING ‑ Risk of fire and injury due to  
windscreen washer concentrate  
#
Do not mix MB SummerFit and MB Win‐  
terFit with other windscreen washer flu‐  
ids.  
Windscreen washer concentrate is highly  
flammable. It could ignite if it comes into  
contact with hot engine component parts or  
the exhaust system.  
#
Always use coolant approved by  
Mercedes-Benz.  

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