2005 Mercedes-Benz C-Class Mercedes-Benz C-Class 2005

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2005 Mercedes-Benz C-Class repairs by problem area

Engine (42%)

Transmission and Drivetrain (7%)

Brakes and Traction Control (2%)

Suspension and Steering (9%)

Electrical and Air Conditioning (24%)

Paint, Rust, Leaks, Rattles, and Trim (8%)

Other (8%)

Chart based on 179 repairs.
See TSBs and recalls for the 2005 Mercedes-Benz C-Class.

2005 Mercedes-Benz C-Class repair cost distribution

$2500+ (3%)

$1000 - $2499 (8%)

$500 - $999 (15%)

$100 - $499 (31%)

< $100 (42%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 144 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2005 Mercedes-Benz C-Class

Engine not specified

Mercedes-Benz C-Class in Pennsylvania, United States
Jun 2011 - Jan 2013
Jan 2013

US $175
EGR value went bad 
Mercedes-Benz C-Class in Indiana, United States
Feb 2010 - Apr 2011
Mar 2010

66000 mi

US $600
Couldn't open the door because Mercedes used a $2 door handle that I paid $150 to replace. NOT HAPPY! CD player tried to change CDs constantly. Required 3 trips to dealer to get them to fix. I gave them specific detail. They disagreed, and it took multiple trips over 1 month for them to determine original diagnosis was correct. My last Mercedes. 
Apr 2011

72000 mi

US $1450
Rear passenger door latch not working - door could not be opened from inside. Passenger front door latch not working - door could not be opened from the outside. Replaced radio for SECOND time since I've owned the car. Screen blacked out and intermittent. Note that problem not fixed. Stereo was replaced and the new stereo cassette player doesn't work. Mercedes sucks. 

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2005 Mercedes-Benz C-Class 4dr Wagon

168-horsepower 2.6L V6 5-speed shiftable automatic AWD

Mercedes-Benz C-Class in Quebec, Canada
Oct 2010 - Oct 2011
Nov 2010

50840 mi
water disappeared from radiator...faulty pump, improperly diagnosed on previous visit to dealership 
Oct 2011

66340 mi
noises...transmission clunks at low speeds when accelerating or decelerating. something underneath is also squeaking when I go over bumps but not when mechanic is in the car! 

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2005 Mercedes-Benz C-Class 4dr Sedan

supercharged 189hp 1.8L I4 6-speed manual RWD

Mercedes-Benz C-Class in Tennessee, United States
Dec 2013 - Jun 2018
Jun 2014

32000 mi

US $280
HID ballast failed. Replaced ballast and bulb. Steering angle sensor failed and was replaced. Independent shop reset resulting airbag warning light due to disconnected power/battery. 
Sep 2017

63000 mi

US $25
Xenon bulb became dim. Replaced bulb. 
Dec 2017

65000 mi

US $30
Replaced the other xenon bulb due to flickering. Steering column hub (supports turn signal switch, etc) became loose. Required epoxy to repair loose hub. 
Feb 2018

68000 mi

US $250
Replaced alternator due to failing voltage regulator 
Mercedes-Benz C-Class in California, United States
Aug 2008 - Apr 2018
Nov 2008

25000 mi
Fan speed resistor, a few interior trim pieces, O ring for low pressure power steering hose. 
Jan 2018

51000 mi

US $300
recharge and test for leaks 
Mercedes-Benz C-Class in Missouri, United States
Jul 2008 - Dec 2012
Aug 2008

15000 mi
High pressure light washer door. Spring on retractable door had to be replaced. Warranty work 
Sep 2010

42000 mi

US $75
Fuel pumps were replaced, out of pocket cost $75, total repair bill $1500. 

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2005 Mercedes-Benz C-Class 4dr Sedan

supercharged 189hp 1.8L I4 5-speed shiftable automatic RWD

Mercedes-Benz C-Class in Arizona, United States
Oct 2007 - Sep 2009
Jan 2008

57000 mi
Transmission leak. Alarm wire had been loose so the alarm was having issues. It took two trips but issue was finally resolved. 
Apr 2008

61000 mi
Vacuum hose bulletin, with some seals. Recurring alarm problem, repaired for the third time. 
Jun 2009

86000 mi
This was a recurring alarm issue. This will be the fifth repair for this issue. 
Jul 2009

90000 mi
The alternator bearing started to make a lot of metallic grinding noises. The alternator was replaced and the problem was corrected. One of the passenger front lower control arm bushings started to leak. It was replaced and the problem was resolved. 
Mercedes-Benz C-Class in Nebraska, United States
Jun 2007 - Mar 2010
May 2007

45000 mi
Have owned this car since Dec 2004. Only times in the shop have been for scheduled maintenance. Need to take it in and have the fan checked out. When the A/C is on, the fan will just stop for a few minutes. 
Mercedes-Benz C-Class in Nevada, United States
Mar 2010 - Dec 2015
May 2010

51000 mi
Thermostat was stuck open 
Dec 2010

57000 mi
Vacuum pump seal leaking oil on engine right side 
Sep 2011

64000 mi
Check engine light and poor performance initiated visit. Service Campaign indicated that solenoid oil leaks were cause. Completed service campaign and replaced parts and car is good. Unrelated but had to replace battery this month. 
Nov 2014

95000 mi

US $165
Battery needed replacement - 3yrs and Las Vegas is about all you get 
Mercedes-Benz C-Class in Georgia, United States
Sep 2008 - Sep 2012
Oct 2008

31000 mi
CEL on. Traced to leak in fuel filler neck. Replaced under warranty. 
Dec 2008

33000 mi
Replaced rear shock - noise. Replaced rear speaker - rattles. Replaced steering wheel buttons - faded. Re-programmed sunroof. Warranty. 
Mar 2009

36000 mi
Transmission connector leaking. Replaced. Transmission mount collapsed. Replaced. Warranty ends. 
Jan 2011

101000 mi

US $430
Thermostat failure.. replacement part was $28 and labor was $100. The rest was other maintenance.  Thermostat failure.. replacement part was $28 and labor was $100. The rest was other maintenance.  
Feb 2012

130000 mi

US $300
Engine mounts replaced 
Apr 2012

134200 mi

US $565
Control arm bushings all shot. Replaced. 
Sep 2012

140000 mi

US $1000
A/C compressor failed, tensioner pulley also bad. 
Mercedes-Benz C-Class in New Mexico, United States
- Mar 2005
Mar 2005

3500 mi
engine seal leaking 
Mercedes-Benz C-Class in Texas, United States
- Nov 2006
Nov 2006

27000 mi
Middle console cover broke off, covered under warranty. 
Mercedes-Benz C-Class in California, United States
Nov 2016 - Jun 2018
Jan 2017

US $50
Oil leaking, replaced valve cover gasket. 
Feb 2017

115000 mi

US $250
Conductor plate replacement. Connector was leaking. 
May 2017

113998 mi

US $150
Oil vac pump 
Mar 2018

123000 mi

US $80
Cam magnet sensors replacement. They were leaking oil. 
Mercedes-Benz C-Class in Indiana, United States
Nov 2011 - Oct 2012
Dec 2011

99000 mi

US $100
The lights -- parking, brake, and marker have been going out on their own. 
Mercedes-Benz C-Class in North Carolina, United States
Dec 2011 - Sep 2018
May 2012

115300 mi

US $170
transmission mount bad R&R part $70, labor $100 
Jun 2014

137000 mi

US $235
miss in engine when starting. adj. mass air. 
Mercedes-Benz C-Class in North Carolina, United States
Sep 2011 - Jun 2018
Dec 2011

52000 mi

US $317
Replaced the trans connector plug and topped off the transmission fluid that was lost due to the faulty connector plug. 
Feb 2013

54900 mi

US $20
Replaced thermostat 
Aug 2014

72000 mi

US $10
Replaced rear license plate bulb and headlight. 
Mercedes-Benz C-Class in Georgia, United States
Dec 2006 - Dec 2014
Nov 2006

20000 mi

US $1800
Warranty. MB replaced the cabin carpet entirely after it began to discolor. No other repairs. 
Sep 2007

41000 mi
Driver's seat pan stitching came loose at a wear point (bolster). M-B replaced @ no cost. 
May 2009

67000 mi
M-B dealer replaced the transmission control module. Persistent reports of sluggish shifting on the SSk variant apparently prompted this. Appears to be the subject of a TSB or "for cause" event. Replaced at no charge to us, while in for an oil change. 
Oct 2010

90000 mi
Cover for driver seat motors has failed and come loose from chassis. 
Jun 2011

103000 mi

US $435
Seat trim on the driver power seat had broken where it covers the power rack. Replaced the cover. 
Oct 2011

111000 mi

US $250
Seat pan trim failed again. In addition, dealer said trim would fail because seat springs were broken (sic). Instructed my 130# wife to stop jumping on seat (LOL). Fired the dealer (RBM Atlanta). 
Mar 2012

121000 mi
Repaired seat trim again. 
Oct 2014

158000 mi

US $2500
camshaft sprocket failed. 
Mercedes-Benz C-Class in Florida, United States
Dec 2007 - Jan 2013
Mar 2008

53000 mi
Replace psv hose on supercharger. 
May 2008

57000 mi

US $150
Cam magnet sensor leaking. 
Feb 2010

84000 mi

US $100
Thermostat 
Dec 2010

98000 mi

US $25
Transmission Adapter Plug Leaking 
Dec 2012

128000 mi

US $1200
Alternator Replaced 
Mercedes-Benz C-Class in Hawaii, United States
Jul 2009 - Oct 2012
Feb 2012

60500 mi

US $1200
Alternator failed. Starter failed 
Mercedes-Benz C-Class in Oklahoma, United States
Dec 2008 - Dec 2009
Apr 2008

24000 mi
Roaring noise coming from rear of car while accelerating. Dealer initially unable to replicate, later through thorough vibration sensor exam found that the rear transmission mount had broken. 
Mercedes-Benz C-Class in Texas, United States
Jun 2008 - Jul 2011
Feb 2011

79600 mi

US $2000
Vapor leak at gas tank neck repaired. Oil leak repaired. 
Jun 2011

86000 mi

US $600
Alternator pulley causing tensioner to vibrate; replace pulley and vbelt. 
Mercedes-Benz C-Class in Oklahoma, United States
Aug 2008 - Mar 2010
Dec 2008

46000 mi
The check engine light came on, I took the car to the dealer. They told me it was a loose gasket, but that a recall had been ordered on it, so they were going to order the part and repair it when the part arrived. She is scheduled to go back in the 30th 
Mercedes-Benz C-Class in Quebec, Canada
Jun 2008 - Sep 2011
Feb 2009

32736 mi
Direction arm (left). combustion chamber event (service campaign) direction thrust arm replacement (warranty) 
Dec 2009

40300 mi
 
Mercedes-Benz C-Class in Michigan, United States
May 2008 - Mar 2010
Nov 2008

48000 mi
Bad temp sensor - replaced. 
Mercedes-Benz C-Class in California, United States
Dec 2007 - Jul 2010
Jun 2008

45000 mi
Rattles from speaker grilles; repair not successful 
Feb 2010

75000 mi
Check engine light, loss of fuel pressure. Couldn't find leak, reset light. 
Jun 2010

85000 mi

US $1000
Check engine light, loss of fuel pressure. Leak in fuel filler neck, needed to smoke test and replace neck and seals. 
Mercedes-Benz C-Class in Maryland, United States
Aug 2008 - Mar 2010
Oct 2008

57000 mi

US $555
needed hose for intake hose cost 28.00 but removal of trottle body etc to replace hose labor cost was $500.00 
Mercedes-Benz C-Class in New Hampshire, United States
Oct 2007 - Jan 2014
Dec 2008

95000 mi

US $300
Cooling system thermostat. Magnetic Camshaft Sensors leaking oil. 
Jan 2012

161000 mi

US $120
Airbag light was on. Troubleshot problem, turned off light. 
Mercedes-Benz C-Class in California, United States
- Apr 2009
Apr 2009

60000 mi
Front Brakes fixed 
Mercedes-Benz C-Class in South Carolina, United States
Apr 2016 - Jan 2018
Nov 2016

85000 mi

US $100
Replace camshaft magnets as they were leaking oil. 
Jul 2017

92000 mi

US $100
AC compressor and dryer replaced as it broke and failed. The alternator one way pulley was frozen. I replaced it. 
Nov 2017

101000 mi

US $35
The windshield washer motor failed. I replaced it. 
Mercedes-Benz C-Class in California, United States
Nov 2008 - Jan 2014
Dec 2008

41000 mi
Paint peeling off of shift knob. Smartkey - cover is cracked. Sunroof did not close properly.  
Jun 2009

50000 mi
Cover was cracked 
Oct 2010

75000 mi

US $878
Oil leak from Vacuum Booster, replaced. Tranny oil leak from sensor, sensor replaced. 
Sep 2011

88000 mi
Cam sensor replaced under recall. minor seeping of oil was noted. 
Sep 2012

108000 mi

US $19
front left fender well lining dislodged and hit tire, removed and replaced with non-oem part. Perfomed the repair myself, took about a half hour. 
Jul 2013

116000 mi

US $120
A/C not blowing cold air, just needed recharge. No problems since. 
Mercedes-Benz C-Class in Nevada, United States
Apr 2011 - May 2012
May 2012

79000 mi

US $2009
Cel on for thermostat.  Front strut bushing worn out.  Vacuum leak. Fuel filter replaced. Spark plugs. Battery. Alignment. Wipper blades. Service B. 

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2005 Mercedes-Benz C-Class 4dr Sedan

supercharged 154hp 1.8L I4 5-speed shiftable automatic RWD

Mercedes-Benz C-Class in Costa Rica
Dec 2015 - Jun 2017
Jan 2016

$50
The M271 engine has problems with carbon buildup in the valves for two reasons: 3-hole injectors and engine oil vapors. At the moment I 'm trying to burn the carbon with a fluid added to the intake. 
Jun 2017

86800 mi

$400
change radiator 

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2005 Mercedes-Benz C-Class 4dr Sedan

362-horsepower 5.4L V8 5-speed shiftable automatic RWD

Mercedes-Benz C-Class in Louisiana, United States
Apr 2014 - Jun 2015
Nov 2014

86832 mi

US $160
Engine wouldn't turn over and oil was about 2 quarts low. Filled up oil until oil level OK and drove to shop. A new crank position sensor was needed. Repair was two hours labor. 
Mercedes-Benz C-Class in South Africa
Mar 2015 - Apr 2017
Apr 2016

123360 mi

R 1000
Engine & Transmission mounting changed,  Tie Rods changed, Left Lower Control Arm changed. 
Oct 2016

130180 mi

R 700
Water Pump change 
Mercedes-Benz C-Class in California, United States
Dec 2010 - Oct 2012
Jan 2011

90000 mi
Replaced crank sensor Repaired several oil leaks Driver side window switch became dislodged. Dealer popped switch back into place but 1-touch up/down remains broken. 
Mar 2011

92200 mi

US $450
COMAND not working properly. Replaced ipod module and reprogrammed COMAND. COMAND system not working properly. iPod interface replaced and system reprogrammed. 
Jan 2012

US $780
Replaced Mass Airflow Sensor 
Sep 2012

104000 mi

US $600
Replaced control arm bushings 
Oct 2012

104000 mi
It would have been easy enough to replace the switch but I didn't feel like spending the couple hundred just to fix 1-touch up/down. 
Mercedes-Benz C-Class in Massachusetts, United States
Sep 2009 - Sep 2011
Oct 2009

55000 mi
The car would crank & not start same problem after driving it for 1 day 
Jul 2010

58000 mi

US $300
ac blew warm air checked for leaks found none one year ago. same problem this year i think they should have fixed last year. 
Mercedes-Benz C-Class in South Dakota, United States
Jan 2009 - Oct 2009
Aug 2009

106000 mi

US $550
emissions air injection pump went out 
Sep 2009

106000 mi
Replacement air injection pump for emissions control failed after a month, replaced again. 

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2005 Mercedes-Benz C-Class 4dr Sedan

215-horsepower 3.2L V6 5-speed shiftable automatic AWD

Mercedes-Benz C-Class in Illinois, United States
Apr 2014 - Nov 2015
Apr 2015

64300 mi

US $230
Taillight contacts corroded causing error codes. Replaced OEM taillights with LED taillights. 
Nov 2015

66000 mi
Car shows "backup lights on" message when the backup lights are not on. 
Mercedes-Benz C-Class in South Africa
Nov 2010 - May 2014
Dec 2010

93000 mi

R 4700
Oxygen sensors. 
Apr 2011

97960 mi
Control Arm Bushes had been replaced a year ago. They broke again and had to be replace, luckily within the warranty period. 
Dec 2012

122760 mi

R 200
Control Arm Bushes 
Apr 2014

140520 mi

R 10000
Fan Broke 

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2005 Mercedes-Benz C-Class 4dr Sedan

168-horsepower 2.6L V6 5-speed shiftable automatic RWD

Mercedes-Benz C-Class in California, United States
Feb 2016 - Sep 2017
Aug 2017

425000 mi

US $5000
Starter 

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2005 Mercedes-Benz C-Class 4dr Sedan

168-horsepower 2.6L V6 5-speed shiftable automatic AWD

Mercedes-Benz C-Class in Connecticut, United States
Jul 2014 - Feb 2015
Nov 2014

89000 mi

US $135
replace leaking windshield washer pump 
Mercedes-Benz C-Class in Alberta, Canada
Jan 2013 - Mar 2018
Mar 2018

81840 mi

C $45
Power Steering Fluid leaked. Reservoir has been replaced. Fluid flush has been performed. 
Mercedes-Benz C-Class in New York, United States
Nov 2008 - Mar 2011
May 2009

52000 mi

US $300
Interior Lighting did not work. Light bulb would not fix the problem, so entire assembly replaced. Fixed problem. Under CPO warranty. The driver door seal was replaced due to excessive road noise. Parts & Labour of $300. Problem solved. 
Jul 2010

64000 mi

US $800
Replaced Alternator 
Nov 2010

65200 mi

US $500
Airbag Harness Replaced 
Mercedes-Benz C-Class in Pennsylvania, United States
Aug 2015 - Oct 2015
Oct 2015

60000 mi

US $2000
Front ball joints  and left inside CV boot and axle replaced. 
Mercedes-Benz C-Class in Illinois, United States
Aug 2010 - Aug 2018
May 2010

98000 mi

US $841
Replaced L/F door exterior trim, and Quarter Panel Trim 
Apr 2011

125000 mi

US $436
Crank sensor replaced, and valve cover gasket replaced 
May 2011

126426 mi

US $355
A/C Work done: AC Clutch rebuilt AC Pressure Sensor replaced 
Jun 2011

129850 mi

US $58
window activator button replaced with a used one 
Aug 2011

133500 mi

US $210
Replaced cracked wheel rim. Found a used replacement rim and saved a few hundred bucks. 
Nov 2011

138815 mi

US $500
axle seal replaced to stop oil leak 
Feb 2012

147137 mi

US $298
Camshaft position sensor replaced 
Apr 2012

149772 mi

US $208
Replaced the alternator 
Jun 2012

153000 mi

US $560
Took hours to diagnose a broken wire in the A/C system. 
Jul 2013

165328 mi

US $250
Front CV Axle rebuild 
Sep 2013

166000 mi

US $273
A shuddering sound when turning at slow speed. Transfer case fluid changed. 
Feb 2014

169508 mi

US $817
REPLACED BOTH VALVE COVER GASKETS Replaced L/F outer CV boot Smelled oil - Replaced both valve cover gaskets 
Jul 2014

175000 mi

US $355
Replaced Right Front outer C/V boot Also new brake pads all around, new front brake rotors 
Aug 2014

174488 mi

US $432
Replaced all three engine mounts. Straightened a rim New pair rear Coil springs Transfer Case fluid replacement Engine felt rough, Motor Mounts needed replacing. New MB OEM Motor Mounts installed Bad spring-snap sound on moderate bumps. Both rear springs were broken. New Coil Springs installed. 'Groaning' Sound from Transfer Case during slow tight turns again! Transfer Case fluid change was recommended w/only 10,000 miles since last change! This C240 AWD model is known for this problem requiring the frequent changes 
Sep 2014

174937 mi

US $538
Water Pump replacement Water pump replacement 
Apr 2015

185200 mi

US $259
replace oxygen sensor Engine light came back on after a few days. Replace EGR Valve, cleaned EGR tubes 
May 2015

185300 mi

US $504
New A/C condenser New valve cover gaskets R/F Shock strut replaced 
Jul 2015

186000 mi

US $855
Replace R/F Axle and Control Arms Transfer case and rear differential fluid change 
Mar 2017

211000 mi

US $70
Hood release cable repair. Readjust and lubricate. 
Aug 2018

222209 mi

US $455
Transfer case service twice flushed with new fluid, transmission mount, oil change 
Mercedes-Benz C-Class in Massachusetts, United States
May 2009 - Nov 2009
Nov 2009

53000 mi
Wood trim around gear shifter is cracking. Mercedes dealer told this is normal because of enivronmental conditions and not covered under warranty. We believe poor workmanship and this is the last Mercedes we buy. 

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2005 Mercedes-Benz C-Class 4-door

4-cylinder manual 2WD

Mercedes-Benz C-Class in Romania
Dec 2011 - Dec 2012
Jan 2012

41540 mi

$300
car is sometimes using only 3 cylinders out of 4 

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2005 Mercedes-Benz C-Class 2dr Hatch

supercharged 189hp 1.8L I4 6-speed manual RWD

Mercedes-Benz C-Class in British Columbia, Canada
Sep 2010 - Sep 2018
Oct 2010

57350 mi

C $55
Added Adapter cables MB #2711502733 to camshaft sensor cables to prevent oil leaking into the wiring harness. Added Adapter cables MB #2711502733 to camshaft sensor cables to prevent oil leaking into the wiring harness. 
Feb 2015

71500 mi

C $50
Replace thermostat and upper radiator hose. 
Jan 2017

72000 mi

C $100
Drivers door stopper snapped. Door trim removed, stopper replaced, and trim re-installed 
Mercedes-Benz C-Class in District of Columbia, United States
Mar 2005 - Nov 2010
Sep 2005

5500 mi
replace brake pads under warranty -- squeaking, early wear 
Sep 2006

12000 mi
adjust rear hatch -- was rubbing against bootlid, leading to small crack in clearcoat 
Nov 2007

21000 mi
CEL light came on, diagnostic was coolant thermostat needed replacement. Part ordered from Germany, arrived a week later, car now fixed (1+1 days total) Installed new thermostat. 
May 2008

24000 mi
Driver's seat mechanism replaced -- driver's seat could not be opened for rear passengers. 
Jun 2008

24000 mi
AC regulator replaced under warranty. 
Jul 2010

32000 mi

US $350
Driver window rattle repaired by disassembling, tightening, and reassembling driver's door.  

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2005 Mercedes-Benz C-Class

4-cylinder diesel automatic 2WD

Mercedes-Benz C-Class in Great Britain
May 2009 - Mar 2010
Jun 2009

42000 mi
Replaced the front side light. I found it tricky due to having never had to do one before, but a local garage showed me that I was being too careful. Just hold the cap and give it a sharp pull and it comes out very easily. I have since replaced the other 

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2004.5 Mercedes-Benz C-Class 4dr Sedan

supercharged 189hp 1.8L I4 5-speed shiftable automatic RWD

Mercedes-Benz C-Class in South Australia, Australia
Jan 2014 - Dec 2015
Nov 2014

114700 mi

A $12550
Engine timing chain went, destroying motor. 
Apr 2015

244400 mi

A $6573
Timing chain broke again. 
Sep 2015

285200 mi

A $1650
Air cond not work, new compressor fitted. 

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2004.5 Mercedes-Benz C-Class 4dr Sedan

168-horsepower 2.6L V6 5-speed shiftable automatic RWD

Mercedes-Benz C-Class in California, United States
Sep 2017 - Sep 2017
Sep 2017

108000 mi

US $30
Replaced rubber bushings 

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2005 Mercedes-Benz C-Class Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2005 Mercedes-Benz C-Class problems occur, check out our car reliability stats.