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Checking and refilling levels
Auxiliary heater
V
ehic
l
es with a diesel engine may be fitted
with an auxiliary heater. The heater runs off
the fuel from the fuel tank. On doing so,
smells and steam may be noticed outside the
vehicle for a short period. This is normal and
it is not an indication of a fault in the vehicle.
Whenever there is little fuel in the tank (re-
serve), the auxiliary heater automatically
switches off.
WARNING
Never use start boosters. An aerosol start
boost
er could explode or cause a sudden rise
in engine speed leading to engine damage
and serious injury.
CAUTION
●
The vehic
le is not prepared for the use of
biodiesel. Never, under any circumstances re-
fuel with biodiesel. It could damage the fuel
system and subsequently lead to engine
faults!
●
The addition of biodiesel to diesel by the
diesel producer according to Standard EN 590
or other equivalent (DIN 51628 in Germany,
for example) is authorised and causes no
type of damage to the engine or the fuel sys-
tem.
●
The diesel engine has been designed for to
use diesel fuel exclusively. Therefore, never
use petrol, fuel oil or other unsuitable fuels.
The composition of these fuels may signifi-
cantly d
amage the fuel system and the en-
gine.
●
The use of diesel fuels with a high sulphur
percentage could considerably reduce the
service life of the diesel particulate filter.
Your technical service centre will be able to
tell you which countries have diesel with a
high sulphur content.
Information on fuel consumption
The consumption and emission values indi-
c
at
ed do not
refer to one specific vehicle.
They are only to be used to compare the val-
ues of the different vehicle versions. The fuel
consumption and CO
2
emissions of a vehicle
not only depend on the effective use of fuel.
They also depend on your driving style and
other non-technical factors.
Calculation of fuel consumption
Fuel consumption and emission values are
determined according to the current version
of the 715/2007/EC or 80/1268/EEC regula-
tion and are valid for the vehicle kerb weight.
The specifications do not refer to an individu-
al vehicle. Two measuring cycles are carried
out on a rolling road test bed to calculate fuel
consumption. The test criteria are as follows:
Urban cycle
Measurement of the urban cycle
starts with an engine cold start. City
driving is simulated below at be-
tween 0 and 50 km/h (31 mph).
Road cycle
In the road cycle simulation, the car
undergoes frequent acceleration and
braking in all gears, as in normal ev-
eryday driving. The road speed rang-
es from 0 to 120 km/h (0 to 75 mph).
Combined
The average combined consumption
is calculated with a weighting of
around 37 % for the urban cycle and
63 % for the road cycle.
CO
2
emissions
of the combina-
tion
The exhaust gases are collected dur-
ing both driving cycles to calculate
carbon dioxide emissions (urban and
road). The gas composition is then
analysed to evaluate the CO
2
content
and other emissions.
Note
●
The kerb weight
may vary according to the
vehicle equipment. This could raise consump-
tion and the CO
2
emissions slightly.
●
In practice, consumption values could be
different to the values calculated based on
the 715/2007/EC or 80/1268/EEC regula-
tions.
269
Technical dataAdviceOperationEmergenciesSafety
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