Page 8 of 400

ContentsTechnical data..................................  335
Spare parts service ............................  336
Warranty coverage .............................  337
Loss of Service and Warranty 
Information Booklet......................  337
Identification labels............................  338
Layout of poly-V-belt drive .................  339
C 230 Kompressor Sport..............  339
C 240/C 320 (all models) ............  339
C 32 AMG.....................................  339
Engine ................................................  340
Rims and Tires ...................................  342
Same size tires .............................  343
Mixed size tires ............................  344
Minispare wheel ...........................  345
Electrical system................................  346
Main dimensions................................  347
Weights ..............................................  348Fuels, coolants, lubricants, etc. .........  349
Capacities ....................................  349
Engine oils....................................  352
Engine oil additives ......................  352
Air conditioning refrigerant ..........  352
Brake fluid ....................................  352
Premium unleaded gasoline .........  353
Fuel requirements ........................  353
Gasoline additives ........................  354
Flexible Fuel Vehicles ...................  354
Coolants.......................................  356
Windshield washer and headlamp 
cleaning* system .........................  358
Consumer information .......................  359
Uniform tire quality grading .........  359
Technical terms...............................  361Index.................................................  367 
     
        
        Page 146 of 400

146 Controls in detailAutomatic transmission*
Program mode selector switch
The program mode selector switch is 
located on the lower part of the center 
console.
1Program mode selector switch
S Sport For standard driving
C Comfort For comfort driving
!Coasting the vehicle, or driving for any 
other reason with gear selector lever 
inN can result in transmission damage 
that is not covered by the 
Mercedes-Benz Limited Warranty.Warning!
G
Getting out of your vehicle with the gear 
selector lever not fully engaged in positionP 
is dangerous. Also, positionP alone is not 
intended to or capable of preventing your 
vehicle from moving, possibly hitting people 
or objects.
Always set the parking brake in addition to 
shifting to positionP (
page 50).
When parked on an incline, turn the front 
wheels towards the road curb.
Do not park this vehicle in areas where 
combustible materials such as grass, hay or 
leaves can come into contact with the hot 
exhaust system, as these materials could be 
ignited and cause a vehicle fire.
Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch, take it 
with you and lock the vehicle. Do not leave 
children unattended in the vehicle, or with 
access to an unlocked vehicle. Children 
could move the gear selector lever from 
positionP, which could result in an accident 
and/or serious personal injury.
!Never change the program mode when 
the gear selector lever is out of 
positionP. This could result in a 
change of driving characteristics for 
which you may not be prepared. 
     
        
        Page 182 of 400

182 Controls in detailAudio systemWeather band
Press the
WB key.
The weather band station last selected 
is tuned in.
Select the desired weather band 
station with buttons4 to7.
If a station cannot be tuned in, a scan 
is automatically started.
Pressf or ebutton. The next 
receivable weather band station is 
tuned in.
Satellite radio (SAT)* (USA only)Sirius Satellite Radio provides 100 chan-
nels of digital-quality radio, among others 
music, sports, news, and entertainment, 
free of commercials. Sirius Satellite Radio 
uses a fleet of high-power satellites to 
broadcast 24 hours per day 
coast-to-coast.
This diverse, satellite-delivered program-
ming is available for a monthly subscrip-
tion fee. 
For more information, call the Sirius ser-
vice or contact www.siriusradio.com
Program categories
The channels are categorized. The catego-
ries allow you to tune to stations broad-
casting a certain type of program 
(PTY mode) (
page 185).
iAdditional optional satellite radio 
equipment and a subscription to 
satellite radio service provider is re-
quired for the satellite radio operation 
described here. Feature description is 
based on preliminary information 
available at time of printing.
At time of printing, no date for the 
availability of optional equipment re-
quired for satellite radio operation had 
been set. Contact your authorized 
Mercedes-Benz Center for details and 
availability for your vehicle.
Satellite radio service may be unavail-
able or interrupted from time to time 
for a variety of reasons, such as envi-
ronmental or topographic conditions 
and other things we can't control. 
Service might also not be available in 
certain places (e.g., in tunnels, parking 
garages, or within or next to buildings) 
or near other technologies. 
     
        
        Page 256 of 400

256 OperationEngine compartmentC 230 Kompressor Sport1Filler cap
Unscrew filler cap1 from filler neck.
Add engine oil as required. Be careful 
not to overfill with oil.
Be careful not to spill any oil when adding. 
Avoid environmental damage caused by oil 
entering the ground or water.
Screw filler cap1 back on filler neck.
C 240 , and C 320 (all models), C 32 AMG1Filler cap
Unscrew filler cap1 from filler neck.
Add engine oil as required. Be careful 
not to overfill with oil.Be careful not to spill any oil when adding. 
Avoid environmental damage caused by oil 
entering the ground or water.
Screw filler cap1 back on filler neck.
More information on engine oil can be 
found in the “Technical data” section 
(
page 349) and (
page 352).
Transmission fluid level
The transmission fluid level does not need 
to be checked. If you notice transmission 
fluid loss or gear shifting malfunctions, 
have an authorized Mercedes-Benz Center 
check the transmission.
!Excess oil must be siphoned or drained 
off. It could cause damage to the 
engine and catalytic converter not 
covered by the Mercedes-Benz Limited 
Warranty.
!Excess oil must be siphoned or drained 
off. It could cause damage to the 
engine and catalytic converter not 
covered by the Mercedes-Benz Limited 
Warranty. 
     
        
        Page 339 of 400
339 Technical data
Layout of poly-V-belt drive
Layout of poly-V-belt drive
C230KompressorSport
1Power steering pump
2Idler pulley
3Supercharger
4Automatic belt tensioner
5Air conditioning compressor
6Crankshaft
7Coolant pump 
8Generator (alternator)
C 240/C 320 (all models)
1Automatic belt tensioner
2Power steering pump 
3Air conditioning compressor
4Crankshaft 
5Coolant pump
6Generator (alternator)
7Idler pulley
C32AMG
1Idler pulley 
2Idler pulley 
3Supercharger
4Automatic belt tensioner
5Power steering pump 
6Air conditioning compressor
7Crankshaft 
8Coolant pump
9Generator (alternator) 
     
        
        Page 340 of 400
340 Technical dataEngine
EngineModel
C 230 Kompressor Sport (203.040)
1
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment.
C 240 (203.061)
1
C 240 4MATIC (203.081)
1
Engine
271
112
Mode of operation
4-stroke engine, gasoline injection
4-stroke engine, gasoline injection
No. of cylinders
4
6
Bore
3.23 in (82.00 mm)
3.54 in (89.90 mm)
Stroke
3.35 in (85.00 mm)
2.68 in (68.20 mm)
Total piston displacement
109.6 cu in (1 796 cm
3)
158.5 cu in (2 597 cm
3)
Compression ratio
8.5:1
10.5:1
Output acc. to SAE J 1349
189 hp/5 800 rpm 
(141 kW/5 800 rpm)
168 hp/5 500 rpm 
(125 kW/5 500 rpm)
Maximum torque acc. to SAE J 1349
192 lb-ft/3 500 - 4 000 rpm 
(260 Nm/3 500 - 4 000 rpm)
177 lb-ft/4 500 rpm 
(240 Nm/4 500 rpm)
Maximum engine speed
6000 rpm
6200 rpm
Firing order
1-3-4-2
1-4-3-6-2-5
Poly-V-belt
2420 mm
2380 mm 
     
        
        Page 341 of 400
341 Technical data
Engine
Model
C 320 (203.064)
1
C 320 4MATIC (203.084)
1
C 320 Sport (203.064)
1
C32AMG(203.065)
1
Engine
112
112
Mode of operation
4-stroke engine, gasoline injection
4-stroke engine, gasoline injection
No. of cylinders
6
6
Bore
3.54 in (89.90 mm)
3.54 in (89.90 mm)
Stroke
3.31 in (84.00 mm)
3.31 in (84.00 mm)
Total piston displacement
195.2 cu in (3 199 cm
3)
195.2 cu in (3 199 cm
3)
Compression ratio
10:1
9:1
Output acc. to SAE J 1349
215 hp/5 700 rpm 
(160 kW/5 700 rpm)
349 hp/6 100 rpm 
(260 kW/6 100 rpm)
Maximum torque acc. to SAE J 1349
229 lb-ft/3 000 - 4 600 rpm 
(310 Nm/3 000 - 4 600 rpm)
332 lb-ft/4 400 rpm 
(450 Nm/4 400 rpm)
Maximum engine speed
6000 rpm
6 200 rpm
Firing order
1-4-3-6-2-5
1-4-3-6-2-5
Poly-V-belt
2380 mm
2 908 mm
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment. 
     
        
        Page 343 of 400
343 Technical data
Rims and Tires
Same size tiresModel
C240
C 240 4MATIC
C320
C 320 4MATIC
C230KompressorSport
C 320 Sport
C230KompressorSport
C320Sport
C32AMG
Rims
(light alloy)
7 J x 16 H2
71/2 J x 17
71/2 J x 17
-
Rims
(steel - Canada only)
7 J x 16 H2
-
-
-
Wheel offset
1.46 in (37 mm)
1.42 in (36 mm)
1.46 in (37 mm)
-
All-season tires
(radial-ply tires)
205/55 R16 91H
-
-
-
Summer tires
(radial-ply tires)
-
-
225/45 R17 91W
1
1Must not be used with snow chains.
-
Winter tires
(radial-ply tires)
205/55 R16 91H M+S
225/45 R17 91H M+S
225/45 R17 91H M+S
205/50 R17 89H M+S
2
or
225/45 R17 91H M+S
1, 2
2Only on rim 7
1/2 J x 17 H2