FaultScore

FaultScore report

2003 Mercedes Benz C230 problems

Owners have filed 76 complaints about the 2003 Mercedes Benz C230 with NHTSA between 2002 and 2023. The largest single group is the engine & cooling. Across this model's run it ranks 6 of 9 worst.

C

FaultScore 47/100

Higher is worse. Measured against the other years of the Mercedes Benz C230.

How this is worked out

The numbers

76

Complaints

1

Crashes reported

3

Fires reported

1

Injuries reported

30,500 mi

Median mileage at failure

Half of reported failures happened before this

50%

Failed under 36,000 miles

Inside a typical bumper-to-bumper warranty

What kind of bad

The letter says how bad. This says what kind — whether this year drew an unusual number of complaints, unusually dangerous ones, or failures that arrived unusually early.

Complaint volume 39 vs 50 Severity 34 vs 50 Early failure 85 vs 50
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 39
Against the median year of the Mercedes Benz C230. 50 means typical for this model; 100 means roughly double.
Severity — 34
6.6% of these complaints involved a crash, fire, injury or death, against a national rate of 9.7%.
Early failure — 85
50% of failures with a mileage on record happened under 36,000 miles, against a national rate of 29%.

How 2003 compares with every other Mercedes Benz C230

Click any bar to open that year's report.

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks on a 2003 Mercedes Benz C230

Every complaint is filed against a part. Follow any row for the complaints about that part alone.

Engine & Cooling 24 31.6%

0 crashes, 3 fires · median 66,500 mi

Median failure at 10,000 miles

Electrical System 6 7.9%

Median failure at 59,375 miles

Fuel & Propulsion 4 5.3%

Median failure at 12,000 miles

Lights 4 5.3%

Median failure at 40,000 miles

Brakes 4 5.3%

Median failure at 21,000 miles

Tires 3 3.9%

Median failure at 7,600 miles

Windows, Mirrors & Wipers 3 3.9%

Median failure at 166,000 miles

Airbags 3 3.9%

1 crashes, 0 fires · median 65,704 mi

Other & Unspecified 2 2.6%

Median failure at 187,000 miles

Equipment & Accessories 2 2.6%
Doors, Latches & Locks 2 2.6%

Median failure at 47,000 miles

Wheels 2 2.6%

Median failure at 200 miles

Acceleration & Cruise Control 2 2.6%

Median failure at 14,250 miles

Suspension 2 2.6%

Median failure at 60,500 miles

Seats 1 1.3%

Median failure at 20,000 miles

Seat Belts 1 1.3%
Steering 1 1.3%

Median failure at 21,000 miles

Exactly what failed

NHTSA files every complaint against a named sub-assembly, not just a system. This is the difference between knowing it was "the engine" and knowing which part of it — the list to hand a mechanic.

Engine 6 26.1%
Automatic Transmission 6 26.1%
Exhaust System 3 13.0%
RIM 2 8.7%
Antilock/Traction Control/Electronic Limited Slip 2 8.7%
Tank Assembly 2 8.7%
Concealment Devices 1 4.3%
Shaft Pitman 1 4.3%

When it fails

Odometer readings owners gave when they filed. About half of all complaints include one.

Under 1,000 miles 6 10.3%
1,000 – 9,999 miles 4 6.9%
10,000 – 24,999 miles 19 32.8%
25,000 – 49,999 miles 4 6.9%
50,000 – 74,999 miles 11 19.0%
75,000 – 99,999 miles 5 8.6%
100,000 – 149,999 miles 2 3.4%
150,000+ miles 7 12.1%

When owners complained

A spike years after the car went on sale usually means a part wearing out on schedule across the whole fleet — the kind of pattern no single owner can see from inside their own car.

Oct 2002 peak 13 Oct 2023

Recalls on the 2003 Mercedes Benz C230

A complaint is one owner's allegation. A recall is the point at which the manufacturer or a regulator agreed the defect is real and dangerous enough to fix for free — however old the car is.

United States — NHTSA

24V874000

VISIBILITY:SUN/MOON ROOF ASSEMBLY

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please see the recall report for a complete list of models and model years. The glass sunroof panel may not be properly secured and can detach.

Risk: A detached sunroof panel can become a road hazard, increasing the risk of a crash.

22V954000

VISIBILITY:SUN/MOON ROOF ASSEMBLY

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The glass sunroof panel may not be properly secured and may detach.

Risk: A detached sunroof panel may become a road hazard, increasing the risk of a crash.

19V918000

VISIBILITY:SUN/MOON ROOF ASSEMBLY

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2001-2011 vehicles. The bonding between the glass panel and the sliding roof frame may deteriorate, possibly resulting in the glass panel detaching from the vehicle. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V918-4126.pdf

Risk: A detached glass panel can separate from the vehicle and become a road hazard, increasing the risk of a crash.

Recalls cover specific build ranges, so check your own vehicle by VIN at nhtsa.gov/recalls or, in Canada, Transport Canada.

Complaints that involved harm

Reports where the owner recorded a crash, a fire, an injury or a death.

at 160,000 miles Cameron Park, CA Fire

ENGINE

I WAS DRIVING THE VEHICLE HOME FROM WORK AND HEADING UPHILL. MY AUTOMATIC AIR CONDITIONING CLICKED OFF, AND THEN I NOTICED A STRONG CHEMICAL SMELL. SMOKE CAME OUT FROM UNDER MY HOOD. THERE WAS NO SAFE PLACE TO PULL OVER, SO I DROVE ANOTHER 1/4 MILE UNTIL I CRESTED THE HILL AND CAME TO A DIP. I NOTICED FLAMES COMING TOWARD ME FROM BETWEEN THE DRIVER DOOR AND THE DASH. I IMMEDIATELY PULLED MY CAR OVER AND PUT IT IN PARK, GRABBED MY STUFF AND GOT OUT. THE CAR COMPLETELY BURNED UP. I GET MY CAR REGULARLY MAINTENANCED BY THE DEALER, AND IT SAID I HAD 1800 OR 1900 MILES UNTIL MY NEXT SERVICE.

NHTSA complaint #10596375 — an unverified report by a vehicle owner.

at 90,000 miles SAN Francisco, CA Fire

ENGINE AND ENGINE COOLING

TL* THE CONTACT OWNS A 2003 MERCEDES BENZ C230. THE CONTACT STATED THAT THERE WAS AN EXCESS OF SMOKE COMING FROM THE TAIL PIPE, BLINDING THE CONTACTS VIEW OF VEHICLE FOLLOWING. THE VEHICLE THEN BEGAN TO LOSE POWER ABNORMALLY AND WAS MOVED FROM THE ROADWAY WHERE IT WAS TOWED TO THE DEALER. THE DEALER ADVISED THAT AN ENGINE VALVE HAD MELTED INTO TWO PIECES AND A PIECE OF THE VALVE WAS FOUND IN THE MANIFOLD. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE AND CURRENT MILEAGES WERE 90,000.

NHTSA complaint #10412018 — an unverified report by a vehicle owner.

at 120,000 miles Williamsburg, VA Crash 1 injured

AIR BAGS

TL*THE CONTACT OWNS A 2003 MERCEDES BENZ C230. THE CONTACT STATED THAT HE WAS DRIVING APPROXIMATELY 30 MPH WHEN HE CRASHED INTO A TREE THAT HAD FALLEN IN THE STREET. THE AIR BAGS DID NOT DEPLOY AND HE SUFFERED FOUR BROKEN BONES AS A RESULT; THE VEHICLE WAS ALSO DESTROYED. HE WAS TOLD BY THE MANUFACTURER THAT THE SECONDARY THRESHOLDS WERE NOT EXCEEDED TO DEPLOY THE AIR BAGS. AN INDEPENDENT INSPECTOR STATED THAT THE AIR BAGS SHOULD HAVE DEPLOYED. THE VEHICLE IDENTIFICATION NUMBER WAS NOT AVAILABLE. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 120,000. UPDATED 3/24/10 *CN UPDATED 06/11/10.

NHTSA complaint #10308878 — an unverified report by a vehicle owner.

at 80,000 miles LOS Angeles, CA Fire

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

THE 2003 MERCERDES BENZ 300C ENGINE SUDDENLY CAUGHT ON FIRE WHILE DRIVING IT TO WORK. THE CAR STALLED, FLAMES SHOOT OUT THE FRONT HOOD, THE CAR WOULD NOT RESTART, SO I COASTED TO THE FIRM. I OPENED THE HOOD TO SEE BLUE FLAMES SHOOPT 20 FEET IN THE AIR. A PASSERBY TRIED TO PUT OUT THE FIRWE UNSUCESSFULLY WITH A FIRE EXTIQUISHER. THE FLAMES GOT HOTTER AND SHOT 60 FEET IN THE AIR, AND POLICE AND FIRE DEPARTMENT RESPONDED AND WERE FINALLY ABLE TO PUT OUT THE FIRE . THE ENGINE BLOCK MELTED DOWN ,AND THERE WAS A LARGE HOLE BURNT INTO THE PASENGER SPACE. THE CAR WAS TOTALED. I WROTE MERCEDES BENZ, AND THEY WERE BEING NONRESPONSIVE. I HAVE PHOTOS OF THE MELTED ENGINE BLOCK AND THE LARGE HOLE BURNED INTO THE PASENGER SPACE THROUGH THE ENGINE FIREWALL.

NHTSA complaint #10187171 — an unverified report by a vehicle owner.

The most recent complaints

In the owners' own words, exactly as filed with NHTSA.

at 166,000 miles Harveys Lake, PA

VISIBILITY/WIPER

The contact owns a 2003 Mercedes-Benz C230. The contact stated that the windshield wipers inadvertently stopped working. The contact jiggled the windshield wiper arm, and the windshield wipers wiped the windshield twice and then stopped operating. There were no warning lights illuminated. The contact called an independent mechanic, who replaced the calipers, but no assistance was provided regarding the windshield wipers. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 166,000.

NHTSA complaint #11550133 — an unverified report by a vehicle owner.

Pomona, CA

VISIBILITY

The contact owns a 2003 Mercedes-Benz C230. The contact received notification of NHTSA Campaign Number: 22V954000 (Visibility) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA complaint #11500368 — an unverified report by a vehicle owner.

at 187,000 miles Lincoln, CA

UNKNOWN OR OTHER

MY PANORAMIC ROOF IS MALFUCTIONING AND IS SUCK SLIGHTLY OPEN WONT CLOSE OR BUDGE AND NOW I'M HAVING MULITPLE ELECTRICAL ISSUES MY LIGHTS ARE FLICKERING CIGARETTE LIGHTER DOESNT WORK MY AC WORKS SOMETIMES BUT THEN IT DOESN'T AND OTHER THINGS AS WELL. THERE IS AN OPEN RECALL ON THE PANORAMIC ROOFS WITH MY MAKE AND MODEL BUT MY VIN NUMBER ISNT SHOWING UP..

NHTSA complaint #11416537 — an unverified report by a vehicle owner.

at 187,000 miles Lincoln, CA

ELECTRICAL SYSTEM

MY PANORAMIC ROOF IS MALFUCTIONING AND IS SUCK SLIGHTLY OPEN WONT CLOSE OR BUDGE AND NOW I'M HAVING MULITPLE ELECTRICAL ISSUES MY LIGHTS ARE FLICKERING CIGARETTE LIGHTER DOESNT WORK MY AC WORKS SOMETIMES BUT THEN IT DOESN'T AND OTHER THINGS AS WELL. THERE IS AN OPEN RECALL ON THE PANORAMIC ROOFS WITH MY MAKE AND MODEL BUT MY VIN NUMBER ISNT SHOWING UP..

NHTSA complaint #11416537 — an unverified report by a vehicle owner.

at 178,000 miles Barnesville, PA

POWER TRAIN

AT 178,000 MILES THE TIMING CHAIN TENSIONER FAILED WHILE THE CAR DRIVING APPROXIMATELY 25 MPH AND ALLOWED THE TIMING CHAIN TO SKIP SEVERAL TEETH LEAVING THE CAR STRANDED AND POTENTIALLY CAUSING THOUSANDS OF DOLLARS WORTH OF DAMAGE TO THE ENGINE INTERNALS. THE CAR WAS DEALER SERVICED SINCE NEW AND ALWAYS HAD MAINTENANCE ON TIME. THERE IS THOUSANDS OF PEOPLE ONLINE THAT HAVE HAD THE EXACT SAME ISSUE AND MERCEDES BENZ USA REFUSES TO DO ANYTHING ABOUT IT YET THEY ACKNOWLEDGE THEY MADE THEM WRONG BECAUSE THEY HAVE UPDATED THE CHAINS AND TENSIONERS.

NHTSA complaint #11320853 — an unverified report by a vehicle owner.

at 178,000 miles Barnesville, PA

ENGINE

AT 178,000 MILES THE TIMING CHAIN TENSIONER FAILED WHILE THE CAR DRIVING APPROXIMATELY 25 MPH AND ALLOWED THE TIMING CHAIN TO SKIP SEVERAL TEETH LEAVING THE CAR STRANDED AND POTENTIALLY CAUSING THOUSANDS OF DOLLARS WORTH OF DAMAGE TO THE ENGINE INTERNALS. THE CAR WAS DEALER SERVICED SINCE NEW AND ALWAYS HAD MAINTENANCE ON TIME. THERE IS THOUSANDS OF PEOPLE ONLINE THAT HAVE HAD THE EXACT SAME ISSUE AND MERCEDES BENZ USA REFUSES TO DO ANYTHING ABOUT IT YET THEY ACKNOWLEDGE THEY MADE THEM WRONG BECAUSE THEY HAVE UPDATED THE CHAINS AND TENSIONERS.

NHTSA complaint #11320853 — an unverified report by a vehicle owner.

at 225,262 miles Humble, TX

EXTERIOR LIGHTING

TL* THE CONTACT OWNS A 2003 MERCEDES BENZ C230. THE CONTACT STATED THAT WHILE DRIVING, IT WAS INFORMED THAT THE TAIL LIGHTS FAILED TO FUNCTION. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE CONTACT REPLACED THE TAIL LIGHT HOWEVER, THE FAILURE PERSISTED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 225,262.

NHTSA complaint #10837519 — an unverified report by a vehicle owner.

Jamul, CA

UNKNOWN OR OTHER

THE LCD DISPLAY FOR SAFETY ITEMS SUCH AS CHECKING THE OIL LEVEL FADES OUT AND CAN NOT BE READ. THERE IS NO OTHER WAY TO CHECK THE OIL LEVEL ON THIS VEHICLE. REPAIR SHOPS DO NOT WANT TO SERVICE AS THEY CAN NOT CHECK OIL LEVEL. NO DIP STICK ON THESE VEHICLES.

NHTSA complaint #10825314 — an unverified report by a vehicle owner.

Washington, DC

SUSPENSION

TL-THE CONTACT OWNS A 2003 MERCEDES BENZ C230. THE CONTACT OBSERVED THAT AFTER EXITING THE VEHICLE, THE FRONT PASSENGER'S SIDE WHEEL DISENGAGED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC, WHO INFORMED THAT THE BALL JOINT SEPARATED FROM THE CONTROL ARM. THE VEHICLE WAS REPAIRED. ON A SEPARATE OCCASION THE FAILURE RECURRED WITH THE FRONT DRIVER'S SIDE AND THE VEHICLE WAS REPAIRED. THE CONTACT STATED THE DEFECTIVE PARTS AND PHOTOGRAPHS WERE AVAILABLE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE AND VIN WERE UNAVAILALBE. JS

NHTSA complaint #10692773 — an unverified report by a vehicle owner.

Albuquerque, NM

ENGINE

TL* THE CONTACT OWNS A 2003 MERCEDES BENZ C230. THE CONTACT STATED THAT THE CHECK ENGINE WARNING LIGHT ILLUMINATED AND THE VEHICLE STALLED WITHOUT WARNING. THE FAILURE OCCURRED ON SEVERAL OCCASIONS. THE VEHICLE WAS TAKEN TO THE DEALER, WHO REPAIRED THE ENGINE WIRING HARNESS AND THE ENGINE CAM SHAFT ADJUSTMENT SOLENOID, BUT THE FAILURE RECURRED. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 75 MPH, THE VEHICLE STALLED. THE VEHICLE WAS ABLE TO RESTART. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE.

NHTSA complaint #10664344 — an unverified report by a vehicle owner.

at 160,000 miles Cameron Park, CA Fire

ENGINE

I WAS DRIVING THE VEHICLE HOME FROM WORK AND HEADING UPHILL. MY AUTOMATIC AIR CONDITIONING CLICKED OFF, AND THEN I NOTICED A STRONG CHEMICAL SMELL. SMOKE CAME OUT FROM UNDER MY HOOD. THERE WAS NO SAFE PLACE TO PULL OVER, SO I DROVE ANOTHER 1/4 MILE UNTIL I CRESTED THE HILL AND CAME TO A DIP. I NOTICED FLAMES COMING TOWARD ME FROM BETWEEN THE DRIVER DOOR AND THE DASH. I IMMEDIATELY PULLED MY CAR OVER AND PUT IT IN PARK, GRABBED MY STUFF AND GOT OUT. THE CAR COMPLETELY BURNED UP. I GET MY CAR REGULARLY MAINTENANCED BY THE DEALER, AND IT SAID I HAD 1800 OR 1900 MILES UNTIL MY NEXT SERVICE.

NHTSA complaint #10596375 — an unverified report by a vehicle owner.

at 90,000 miles SAN Francisco, CA Fire

ENGINE AND ENGINE COOLING

TL* THE CONTACT OWNS A 2003 MERCEDES BENZ C230. THE CONTACT STATED THAT THERE WAS AN EXCESS OF SMOKE COMING FROM THE TAIL PIPE, BLINDING THE CONTACTS VIEW OF VEHICLE FOLLOWING. THE VEHICLE THEN BEGAN TO LOSE POWER ABNORMALLY AND WAS MOVED FROM THE ROADWAY WHERE IT WAS TOWED TO THE DEALER. THE DEALER ADVISED THAT AN ENGINE VALVE HAD MELTED INTO TWO PIECES AND A PIECE OF THE VALVE WAS FOUND IN THE MANIFOLD. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE AND CURRENT MILEAGES WERE 90,000.

NHTSA complaint #10412018 — an unverified report by a vehicle owner.

at 68,000 miles Alpharetta, GA

ENGINE AND ENGINE COOLING

I HAVE 2003 MERCEDES BENZ C230. WHENEVER I WOULD START THE VEHICLE IT WOULD GIVE ME JERK OR MAKE NOISE AND FINALLY JUST BEFORE TAKING IT TO A DEALER IT STALLED. I HAD IT TOWED. THE VEHICLE WAS TAKEN TO A LOCAL SHOP, WHICH SUGGESTED THAT THE PROBLEM IS MUCH LARGER AND NEEDS THE ATTENTION OF THE MANUFACTURER AND HENCE TO TAKEN TO THE DEALER. IT WAS DIAGNOSED AS THE TIMING CHAIN WAS DEFECTIVE AND THE LOCAL SHOP OWNER SAID THIS WAS A COMMON PROBLEM WITH THIS VEHICLE AND A SERIOUS PROBLEM WITH MAJOR COST TO FIX. THE MANUFACTURER WAS CONTACTED WHO DID NOT OFFER ANY ASSISTANCE. THE VEHICLE IS NOT REPAIRED AS THE COST OF FIX IS AS LARGE AS THE CARS CURRENT VALUE. THE FAILURE AND CURRENT MILEAGE IS 68,000.

NHTSA complaint #10392666 — an unverified report by a vehicle owner.

at 92,000 miles Long Branch, NJ

ENGINE AND ENGINE COOLING:ENGINE

TL* THE CONTACT OWNS A 2003 MERCEDES BENZ C230. THE CONTACT STATED THAT WHENEVER SHE WOULD START THE VEHICLE, IT WOULD JERK VIOLENTLY. THE VEHICLE WAS TAKEN TO A LOCAL REPAIR SHOP WHERE IT WAS DIAGNOSED THAT THE CAM SHAFT SENSOR WAS LEAKING AND THE TIMING CHAIN WAS DEFECTIVE. THE MANUFACTURER WAS CONTACTED WHO DID NOT OFFER ANY ASSISTANCE. THE VEHICLE WAS REPAIRED. THE VIN WAS UNAVAILABLE. THE FAILURE AND CURRENT MILEAGE WAS 92,000.

NHTSA complaint #10384138 — an unverified report by a vehicle owner.

at 97,000 miles Saint Louis, MO

ENGINE AND ENGINE COOLING

LEAK ON THE ANTIFREEZE COOLANT TANK WHERE THE THIN HOSE CONNECTS TO THE COOLANT TANK ON TOP, THE STEEL TUBE THAT IS MOLDED INTO THE PLASTIC SLIPPED OUT AND THE PLASTIC PART CRACKED CREATING A LEAK. THE ANTIFREEZE MAY LEAK AND ACCUMULATE UNDER THE CAR, IT CAN DAMAGE THE ENGINE, ALSO IT CAN LEAK WHILE DRIVING CAUSING HAZARDOUS / SLIPPERY CONDITIONS, ALSO CHILDREN OR PETS / ANIMALS MAY DRINK THE LEAKED ANTIFREEZE. THIS IS DANGEROUS.

NHTSA complaint #10367247 — an unverified report by a vehicle owner.

Round Rock, TX

EXTERIOR LIGHTING

WHEN SIGNALING TO TURN LEFT OR RIGHT, ONLY THE LEFT TURN SIGNAL WILL FLASH. THE RIGHT TURN SIGNAL NEVER FLASHES. HOWEVER, BOTH LIGHTS WILL FLASH WHEN HAZARD LIGHTS ARE ON AND WHEN LOCKING/UNLOCKING CAR DOORS.

NHTSA complaint #10350221 — an unverified report by a vehicle owner.

at 75,000 miles Hoboken, NJ

ENGINE AND ENGINE COOLING

THE CAM SENSORS ON THE MERCEDES M271 ENGINE LEAK OIL WHICH SPREADS TO OTHER COMPONENTS VIA THE WIRE HARNESSES CONNECTED TO CAM SENSORS. OIL CONTAMINATION WILL DAMAGE OTHER ELECTRICAL COMPONENTS (NAMELY THE ECU AND EXHAUST OXYGEN SENSORS) IF THE CAM SENSORS AND WIRE HARNESSES ARE NOT REPLACED. A NEW CAM SENSOR AND WIRE HARNESS HAS BEEN DESIGNED AS THE CORRECTIVE ACTION. THE DEFECTIVE CAM SENSOR AND WIRE HARNESS WERE USED ON THE PREVIOUS ENGINE DESIGN (M111). THERE IS A TECHNICAL SERVICE BULLETIN FOR M111 ENGINE BUT NOT THE M271 ENGINE. MERCEDES REFUSES TO RECALL THIS DEFECTIVE DESIGN ON THE M271 ENGINE CAUSING OWNERS TO PAY FOR THE $900 PREVENTATIVE MAINTENANCE. WITHOUT THIS REPAIR THE ECU (PART COST $2000) AND OXYGEN SENSORS (QTY 2 @ $238 EA) WILL BE EVENTUALLY DAMAGED AND WILL NEED TO BE REMOVED AND REPLACED. WITHIN THE PAST WEEK, PAID MORE THAN $ 2,400.00 TO REPLACE 2 CAM SENSORS, 2 OXYGEN SENSORS, AND WIRING HARNESS. REPAIR SHOP SAYS THAT THIS IS A DEFECT THAT MB HAS KNOWN ABOUT FOR YEARS.

NHTSA complaint #10346318 — an unverified report by a vehicle owner.

at 40,000 miles SAN Jose, CA

EXTERIOR LIGHTING

1. THE HEADLIGHT CANNOT BE TURN ON AS I DROVE INTO A 1-MILE DARK TUNNEL IN US WEST. 2. IT PERSISTS FOR ABOUT 1-DAYS DURING A TRIP TO THE US WEST IN THE DRY HEAT ENVIRONMENT. AFTER THAT, THE HEADLIGHT WORK NORMAL AGAIN AS I CAME BACK TO CALIFORNIA. 3. NOTHING HAS BEING DONE SINCE THEN SINCE I WILL PROBABLY NOT DRIVE TO US WEST IN THE VISIBLE NEAR FUTURE. THE OLD PARTS ARE STILL AVAILABLE IN MY CAR.

NHTSA complaint #10314904 — an unverified report by a vehicle owner.

at 120,000 miles Williamsburg, VA Crash 1 injured

AIR BAGS

TL*THE CONTACT OWNS A 2003 MERCEDES BENZ C230. THE CONTACT STATED THAT HE WAS DRIVING APPROXIMATELY 30 MPH WHEN HE CRASHED INTO A TREE THAT HAD FALLEN IN THE STREET. THE AIR BAGS DID NOT DEPLOY AND HE SUFFERED FOUR BROKEN BONES AS A RESULT; THE VEHICLE WAS ALSO DESTROYED. HE WAS TOLD BY THE MANUFACTURER THAT THE SECONDARY THRESHOLDS WERE NOT EXCEEDED TO DEPLOY THE AIR BAGS. AN INDEPENDENT INSPECTOR STATED THAT THE AIR BAGS SHOULD HAVE DEPLOYED. THE VEHICLE IDENTIFICATION NUMBER WAS NOT AVAILABLE. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 120,000. UPDATED 3/24/10 *CN UPDATED 06/11/10.

NHTSA complaint #10308878 — an unverified report by a vehicle owner.

at 71,145 miles Carlsbad, CA

ENGINE AND ENGINE COOLING

ENGINE HARNESS AND CAMSHAFT SOLENOIDS CONTAMINATED DUE TO LEAKING OIL WHICH SUBSEQUENTLY REQUIRED REPLACEMENT OF O2 SENSORS.

NHTSA complaint #10282583 — an unverified report by a vehicle owner.

at 72,850 miles SAN Francisco, CA

ENGINE AND ENGINE COOLING:ENGINE

C230K COUPE AT 73,000 MILES WITH SUDDEN VALVE GUIDES WORN BAD CYLINDER,COMPRESSION LOSS RECENTLY IN APRIL I WAS CALLED INTO MBZ FOR A RECALL ON A VACUUM HOSE, HERE I AM A FEW MONTHS LATER AND I'M DRIVING AND MY CAR STARTS SHAKING ,IDLING STRANGE AND THEN I TAKE IT TO A MECHANIC AND HE FIGURED IT AT FIRST GLANCE IT MAY BE WORN VALVE GASKET SEALS AND I SAID OK LET'S CHANGE THEM AND PUT IN NEW PLUGS TOO...THEN HE CHECKS THE COMPRESSION AND DISCOVERS THAT IT IS HALF OF WHAT IT SHOULD BE, WHAT? WHY SHOULD THE CYLINDER HEADS BE WORN AND NEED TO BE REPLACED FOR NEARLY $3000, ...THIS SEEMS TO BE HAPPENING TOO MANY OWNERS OF THIS MODEL ON HERE AND MBZFORUMS FOR THIS 2003-2005 YEARS. LOSS OF COMPRESSION IN ONE OR MORE CYLINDERS. THIS SHOULD BE RECOGNIZED BY MBZ AS A DEFECT AND SINCE WHEN DO THESE ENGINES FAIL AT 50,000OR EVEN 80,000? I FEEL THIS SHOULD BE PAID FOR BY THEM, THIS IS RIDICULOUS AND SHOULD NOT BE HAPPENING AT THIS MILEAGE!! DEFECT,FLAW IN DESIGN...THEY NEED TO STEP UP AND ADMIT IT AT MERCEDES HEADQUARTERS. PLEASE HELP US OWNERS , THEY ARE GETTING AWAY WITH THIS, MENTIONING VACUUM HOSE RECALLS ON THIS 2003 YEAR BUT SOME DEALERS HAVE RECOGNIZED THAT THESE ENGINES ARE DEFECTIVE AND A RECALL NEEDS TO BE DONE ON THESE VALVE GUIDES/CYLINDER HEADS. WHY IS IT THAT THERE IS AN INCONSISTENCY ON HOW THIS PROBLEM IS RECOGNIZED BY THE DEALER AND HANDLED. SOME ON THE FORUMS HAVE SAID THAT THE DEALER SCREWED THEM IF THE 50,000 WARRANTY IS OVER AND OTHERS HAVE HAD THE PARTS ONLY PAID FOR BY THE DEALER AND OTHERS HAVE HAD THE WHOLE THING PAID!! TOO MANY OF THESE C230K ENGINE CYLINDERS/VALVE GUIDES ARE GOING BAD, THEY ARE DEFECTIVE AND MBZ SHOULD BE CORRECTING THIS. I SHOULD NOT PAY $3000 TO REBUILD ENGINE THAT HAS BEEN MAINTAINED ON SCHEDULE AND FOR A CAR THAT IS AT ONLY 73,000 MILES THANKS

NHTSA complaint #10276462 — an unverified report by a vehicle owner.

SAN Jose, CA

ELECTRICAL SYSTEM

JUST LIKE OTHER REPORTS HERE - ELECTRICAL MALFUNCTION. 50K MILES. TOOK TO MB DEALER FOR ROUGH IDLE AT COLD START UP AND LOW SPEEDS; LOUDER THAN NORMAL IDLE AT START AND IN REVERSE. NO CHECK ENGINE LIGHT, NO ERROR OR PROBLEM INDICATED IN DASH AT ALL. SAME DIAGNOSIS - DEALER REPORTED CAM SOLENOIDS LEAKING ENGINE OIL INTO THE WIRING HARNESS SHORTING HARNESS COMPONENTS (O2 SENSORS ETC.), HIGH $$$ $3600-$4000 REPAIR. ISSUE SHOULD BE RESOLVED AND PAID FOR BY MB SINCE THIS IS KNOWN DEFECT THAT SEVERELY REDUCES THE DRIVE-ABILITY AND VALUE OF THE VEHICLE.

NHTSA complaint #10272472 — an unverified report by a vehicle owner.

at 57,000 miles Virginia Beach, VA

ELECTRICAL SYSTEM

CHECK ENGINE LIGHT ON, WITH OCCASIONAL POOR GAS MILEAGE, ROUGH RUNNING. WHEN ENGINE STARTS ROUGH, ENGINE STOP/RE-START GETS ENGINE TO IDLE/RUN PROPERLY. DEALER REPORTED CAM SOLENOIDS LEAKING ENGINE OIL INTO THE WIRING HARNESS SHORTING HARNESS COMPONENTS (O2 SENSORS ETC.), HIGH $$$ REPAIR. FIRST OCCURRENCE AT 57K MILES (JUST OUT OF WARRANTY). CONTACTED MB, NO CONCERN, TOO BAD FOR YOU. SPORADIC RED LED WARNING ABOUT GAS CAP, BLINKING INDICATOR IN FUEL GAUGE, STOP/RESTART ENGINE, GOES AWAY (ERROR NOT IN OWNERS MANUAL). CAR STILL RUNNING AT 78K MILES AND USUALLY 35 MPG DURING NORMAL COMMUTE SO FAR (WITHOUT REPAIR SO FAR, DO NOT HAVE TAIL PIPE EMISSION CHECK IN AREA YET, SO NOT MANDATED TO FIX MIL LIGHT ISSUE), CLEAR ECM CODES OCCASIONALLY, COME BACK AFTER 3 KEY CYCLES. STUCK WITH CAR THAT IS NOT WORTH FIXING TO HAVE SAME PROBLEM COME BACK. THIS CAM SOLENOID/WIRING HARNESS/O2 SENSOR/CHECK ENGINE LIGHT ISSUE SHOULD BE RESOLVED AND PAID FOR BY MB SINCE THIS IS KNOWN DEFECT THAT SEVERELY REDUCES THE DRIVABLILTY AND VALUE OF THE VEHICLE.

NHTSA complaint #10269601 — an unverified report by a vehicle owner.

at 61,750 miles Danbury, CT

ELECTRICAL SYSTEM

CHECK ENGINE LIGHT LEAD TO ROUGH IDLING AND INABILITY TO DRIVE VEHICLE. 2003 MERCEDES BENZ C230 WITH 61,650 MILES ON IT. ALL CAM SENSORS, O2 SENSORS, MAF SENSOR, ENGINE WIRING HARNESS REPLACED WITH NECESSARY O-RINGS AT DEALER. CAR WAS LAID UP 5 DAYS AND AT A COST OF $2,500.

NHTSA complaint #10266664 — an unverified report by a vehicle owner.

at 40,000 miles Porter Ranch, CA

ENGINE AND ENGINE COOLING

TL*THE CONTACT OWNS A 2003 MERCEDES BENZ C230. WHEN THE VEHICLE WAS STARTED, IT SHOOK UNCONTROLLABLY AND THE CHECK ENGINE INDICATOR ILLUMINATED. THE CONTACT TOOK THE VEHICLE TO THE DEALER AND THEY STATED THAT THE ENGINE OIL WAS LEAKING AND DAMAGED THE WIRING HARNESS AND OXYGEN SENSOR. THE REPAIR WOULD COST $2,000. THE MANUFACTURER STATED THAT THE VEHICLE WAS OUT OF WARRANTY; THEREFORE, THEY WERE NOT RESPONSIBLE FOR THE REPAIR. THE VEHICLE HAS NOT BEEN REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 40,000.

NHTSA complaint #10263954 — an unverified report by a vehicle owner.