damage to the fuel injection system, for
example.
B20 fuels with bio-diesel content
!Continuous use of B20 fuel can lead to fuel
filter clogging and injector deposits. This can
cause engine performance degradation.
Injector deposits can cause the engine oil
level to rise due to unburned fuel washing into
the oil pan. This can cause engine mechanical
damage.
To avoid damages and performance degrada-
tion:
RFill up with ULSD (B5 or less) whenever
possible.
RRegularly monitor your engine oil level if
you use B20 fuel on a regular basis.
RStrictly follow the oil change intervals quo-
ted in the instrument cluster and within
your maintenance booklet.
RUse only engine oils and filters approved for
use in your vehicle.
RIf you do not plan to drive your vehicle for
several weeks, fill your vehicle’s fuel tank in
advance with ULSD fuel.
For more information, consult the gas station
staff. The fatty acid methyl ester B5 or B20 label on the fuel pump must clearly state that the
standard for ULSD is complied with. If the mark-
ing does not make this clear, do not refuel from that pump.
Do not refuel with any fuels that have not been
approved for your vehicle.
For more information about refueling
(
Ypage 125).
Information on fuel consumption
HEnvironmental note
CO
2(carbon dioxide) is the gas which scien-
tists believe to be principally responsible for
global warming (the greenhouse effect). Your
vehicle's CO
2emissions are directly related to
fuel consumption and therefore depend on:
Refficient use of the fuel by the engine
Rdriving style
Rother non-technical factors, such as envi-
ronmental influences, road conditions or
traffic flow
You can minimize your vehicle's CO
2emis-
sions by driving carefully and having it serv-
iced regularly.
Fuel consumption depends on:
Rthe vehicle version
Rthe style of driving
Rthe operating conditions
Rthe type or quality of the fuel used
The vehicle will use more fuel than usual in the
following situations:
Rat very low outside temperatures
Rin city traffic
Rduring short journeys
Ron mountainous terrain
Rwhen towing a trailer
To keep fuel consumption low, observe the
advice in the "Protection of the environment"
section (
Ypage 25).
The following components of the different vehi-
cle versions influence fuel consumption:
Rtire sizes, tire tread, tire pressure, tire condi-
tion
Rbody
Rtransmission ratios for the drive assemblies
Radditional equipment (e.g. air-conditioning
system, auxiliary heating system)
For these reasons, the actual consumption fig-
ures for your vehicle may deviate from the con-
sumption figures determined according to EU
Directive 80/1268/EEC.
Data concerning fuel consumption are recorded in the on-board computer; use the steering
wheel buttons to call up the Trip computer
menu (
Ypage 171).
Diesel Exhaust Fluid (DEF)
General notes
HEnvironmental note
Dispose of DEF in an environmentally respon-
sible manner.
Service products and capacities275
Technical data
Z
