394 Technical dataRims and tires
Rims and tiresUse only tires and rims which have been
specifically developed for your vehicle and
tested and approved by Mercedes-Benz.
Other tires and rims can have detrimental
effects, such as:
Poor handling characteristics
Increased noise
Increased fuel consumption
Same size tires
16’’ tires
!Moreover, tires and rims not approved
by Mercedes-Benz may, under load, ex-
hibit dimensional variations and differ-
ent tire deformation characteristics
that could cause them to come into
contact with the vehicle body or axle
parts. This may result in damage to the
tires or the vehicle.
iFurther information on tires and rims is
available at any authorized
Mercedes-Benz Center. A tire inflation
pressure table is located on the fuel fill-
er flap of the vehicle. The tire pressure
should be checked regularly and
should only be adjusted on cold tires.
Follow the tire manufacturer’s mainte-
nance recommendation included with
the vehicle.
E320/E3204MATIC
Rims (light alloy)
8 J x 16
Wheel offset
1.4 in (36 mm)
Summer tires(radial-ply tires)
-
All-season tires (radial-ply tires)
225/55 R 16 95H M+S
Winter tires (radial-ply tires)
-
404 Technical dataFuels, coolants, lubricants etc.Premium unleaded gasoline
Fuel requirements
Use only premium unleaded gasoline
meeting ASTM standard D 439:
The octane number (posted at the
pu mp ) m ust b e 91 m i n. It is an a ve ra ge
of both the Research (R) Octane Num-
ber and the Motor (M) Octane Number:
(R+M) / 2). This is also known as the
ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not exceed
10%; MTBE must not exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is
not allowed. Gasohol, which contains 10%
ethanol and 90% unleaded gasoline, can be
used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to en-
gine performance problems such as:
Warm-up hesitation
Unstable idle
Knocking / pinging
Misfire
Power loss
Do not blend any specific fuel additives
with fuel. This only results in unnecessary
costs and may be harmful to the engine op-
eration.
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
gasoline is not available and low octane
fuel is used, follow these precautions:
Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible
Avoid full throttle driving and abrupt
acceleration
Do not exceed an engine speed of
3000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage
D o n o t e x c e e d 2 / 3 o f m a x i m u m a c -
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain
439 Index
U
Units
Setting speedometer units 141
Setting temperature units 141
Setting tire inflation pressure
units 143
Unlocking 30, 88, 353
Centrally from inside 107
Driver’s door in an emergency 353
Fuel filler flap 278
Global 89
Global with KEYLESS-GO* 94
Selective settings 89, 94
Trunk in an emergency 354
Trunk lid with KEYLESS-GO* 95
Trunk lid with SmartKey 90
Vehicle in an emergency 257
With KEYLESS-GO* 32
With the SmartKey 30
Upgrade signals
Tele Aid* 256
Uphill driving
Cruise control 212
Upshifting 159Useful features 242
Ashtrays 246
Cigarette lighter 247
Garage door opener 258
Heated steering wheel* 248
Tele Aid* 250
Telephone* 249
V
Vehicle
Individual settings 138, 140
Locking in an emergency 354
Lowering 374
Towing 381
Unlocking in an emergency 353
Vehicle care
Cup holder 307
Distronic* system sensor cover 305
Engine cleaning 304
Gear selector lever 307
Hard plastic trim items 307
Leather upholstery 308
Light alloy wheels 307
Ornamental moldings 304
Paintwork 303
Parktronic* system sensor 305Plastic and rubber parts 308
Power washer 303
Seat belts 307
Steering wheel 307
Tar stains 303
Vehicle washing 304
Window cleaning 306
Wood trims 308
Vehicle level
Changing 228
Setting 228
Automatic 228
Manual 228
Vehicle level control system*
Airmatic DC* 226
Vehicle tool kit 352
Alignment bolt 352
Fuse extractor 352
Hex-socket wrench 352
Open-end wrench 352
Screwdriver 352
Spare fuses 352
Towing eye bolt 352
Universal pliers 352
Vehicle jack 350
Wheel wrench 352
