Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 4 of 6 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Engine And Engine Cooling. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Power Train. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Air Bags. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
1 crash reports0 fire reports2 injury reports
What owners actually said
6 reports
86,314 miles · Jun 3, 2012
Electrical System
CHECK ENGINE LIGHT CAME ON. REPAIR DONE TO FIX ISSUE FOUND AS STATED BY MERCEDES PARK PLACE TECH IN DALLAS TX - 'FOUND ENGINE CONTROL MODULE SENDING INCORRECT SIGNALS DUE TO OIL DAMAGE. ALSO FOUND AIR INTAKE TEMP SENSOR WITH OIL DAMAGE. NECESSARY TO REPLACE ENGINE CONTROL MODULE AND INTAKE TEMP SENSOR. REPLACED ENGINE WIRING…
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CHECK ENGINE LIGHT CAME ON. REPAIR DONE TO FIX ISSUE FOUND AS STATED BY MERCEDES PARK PLACE TECH IN DALLAS TX - 'FOUND ENGINE CONTROL MODULE SENDING INCORRECT SIGNALS DUE TO OIL DAMAGE. ALSO FOUND AIR INTAKE TEMP SENSOR WITH OIL DAMAGE. NECESSARY TO REPLACE ENGINE CONTROL MODULE AND INTAKE TEMP SENSOR. REPLACED ENGINE WIRING HARNESS, CAMSHAFT POSITION SENSORS AND BOTH O2 SENSORS. THE TOTAL CHARGE WAS $3432.12. THIS WAS A KNOWN PROBLEM DUE TO MANUFACTURE DEFECT THAT HAD SUBSEQUENT RECALL 2009100001. THIS RECALL WAS PERFORMED ON MY CAR ON 7/25/2011. BY THIS TIME I HAD ALREADY PAID FOR THE REPAIR AND THEREFORE NO ISSUE WAS FOUND OR REPAIR REQUIRED.. I BELIEVE THAT I SHOULD BE REFUNDED FOR THE THIS REPAIR SINCE IT WAS A RECALL. *TR
NHTSA ODI #10460392
124,000 miles · Feb 27, 2012
Engine And Engine CoolingPower TrainInjury
WAS DRIVING ON EXPRESSWAY TODAY 2/27/1980 WHEN MY 2004 MERCEDES 230 WENT FROM 65 TO 35MPH ALMOST WAS KILLED BY A SEMI TRUCK BEHIND ME!!!! LOOKED ONLINE TODAY TO SEE IF ANYONE ELSE HAD SIMILAR PROBLEMS WELL I WENT TO ONE SITE OVER 200 COMPLAINTS ABOUT THE SAME PROBLEM. THEIR IS ALSO A PENDING CLASS ACTION LAWSUIT ABOUT THIS PROBL…
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WAS DRIVING ON EXPRESSWAY TODAY 2/27/1980 WHEN MY 2004 MERCEDES 230 WENT FROM 65 TO 35MPH ALMOST WAS KILLED BY A SEMI TRUCK BEHIND ME!!!! LOOKED ONLINE TODAY TO SEE IF ANYONE ELSE HAD SIMILAR PROBLEMS WELL I WENT TO ONE SITE OVER 200 COMPLAINTS ABOUT THE SAME PROBLEM. THEIR IS ALSO A PENDING CLASS ACTION LAWSUIT ABOUT THIS PROBLEM IT IS VERY VERY DANGEROUS AND I WAS ALMOST KILLED TODAY BY MY OWN CAR!!!!! 2/27/1980 130PM THIS HAPPENED ON MY BIRTHDAY NOW IAM HAVING IT TOWED AND REPAIRED AND I HAVE SORE NECK ALSO. PLEASE CHECK INTO THIS PLEASE. I SEE ONE SITE ALONE HAD OVER 200 COMPLAINTS ABOUT THIS PROBLEM AND THEIR IS CLASSACTION LAWSUIT ALREADY PENDING FROM OCT 2010 ABOUT THIS ISSUE. I WAS ALMOST KILLED TODAY AND INJURED MY NECK!!!!!!! PLEASE CHECK INTO THIS THEIR HAD TO BE NUMEROUS COMPLAINTS ABOUT THIS PROBLEM. THIS PROBLEM COULD HAVE GOTTEN ME KILLED TODAY AND OTHERS INJURED 65-70 MPH TO 35 MPH IN A SECOND ON THE HIGHWAY ISN'T SAFE. *TR
NHTSA ODI #10449482
26,555 miles · Feb 5, 2007
Engine And Engine Cooling
TL*- CONTACT STATED THAT WHILE DRIVING HER 2004 MERCEDES BENZ C230 THERE WERE EXHAUST FUMES ENTERING THE PASSENGER COMPARTMENT OF FROM AN UNKNOWN AREA. THE FUMES CAUSED THE CONTACT TO HAVE A HEADACHE. THE CONTACT TOOK THE VEHICLE TO THE DEALER FOR SERVICE AT 25,000 MILES ,AND SHE WANTED THE DEALER TO CHANGE THE AIR RECIRCU…
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TL*- CONTACT STATED THAT WHILE DRIVING HER 2004 MERCEDES BENZ C230 THERE WERE EXHAUST FUMES ENTERING THE PASSENGER COMPARTMENT OF FROM AN UNKNOWN AREA. THE FUMES CAUSED THE CONTACT TO HAVE A HEADACHE. THE CONTACT TOOK THE VEHICLE TO THE DEALER FOR SERVICE AT 25,000 MILES ,AND SHE WANTED THE DEALER TO CHANGE THE AIR RECIRCULATION, BUT THE DEALER STATED THAT THEY COULDN'T CHANGE IT DUE TO CARBON MONOXIDE POISONING. INFORMATION WAS GIVEN TO THE DEALER BY THE MANUFACTURER. *AK
NHTSA ODI #10181668
24,705 miles · Dec 5, 2005
Power Train
DT; THE CONTACT STATED TRANSMISSION WAS DEFECTIVE. ON THREE OCCASIONS THE CAR REVVED WITHOUT GEARING DOWN BEFORE COMING TO A COMPLETE STOP. ON THE SECOND OCCURRENCE THE CAR WOULD NOT GO INTO REVERSE. ON ALL OCCASIONS, THE CHECK ENGINE LIGHT CAME ON. THE VEHICLE IS CURRENTLY AT THE DEALERSHIP, WHERE THEY ARE ATTEMPTING TO FI…
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DT; THE CONTACT STATED TRANSMISSION WAS DEFECTIVE. ON THREE OCCASIONS THE CAR REVVED WITHOUT GEARING DOWN BEFORE COMING TO A COMPLETE STOP. ON THE SECOND OCCURRENCE THE CAR WOULD NOT GO INTO REVERSE. ON ALL OCCASIONS, THE CHECK ENGINE LIGHT CAME ON. THE VEHICLE IS CURRENTLY AT THE DEALERSHIP, WHERE THEY ARE ATTEMPTING TO FIND THE CAUSE OF THE PROBLEM. *AK
NHTSA ODI #10144433
Mileage unknown · Jun 24, 2005
Equipment
DT: CONTACT STATES THERE IS A CHEMICAL SMELL COMING FROM THE VENTS. THE SERVICE DEALER REPLACED THE HEATER BOX TWICE AFTER A WEEK THE ODOR RETURNED. THE FOURTH TIME THIS HAPPENED THE SERVICE DEALER FINALLY STATED IT WAS CORROSION IN THE AIR CONDITIONING SYSTEM. THE PADDING UNDERNEATH THE AIR CONDITIONER WAS REPLACED.*AK *SB …
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DT: CONTACT STATES THERE IS A CHEMICAL SMELL COMING FROM THE VENTS. THE SERVICE DEALER REPLACED THE HEATER BOX TWICE AFTER A WEEK THE ODOR RETURNED. THE FOURTH TIME THIS HAPPENED THE SERVICE DEALER FINALLY STATED IT WAS CORROSION IN THE AIR CONDITIONING SYSTEM. THE PADDING UNDERNEATH THE AIR CONDITIONER WAS REPLACED.*AK *SB *NM
NHTSA ODI #10124836
Mileage unknown · May 10, 2005
Air BagsCrashInjury
DT: THE CONTACT VEHICLE WAS INVOLVED IN A ACCIDENT LAST NIGHT LIKE IN THE CENTER OF VEHICLE. CONSUMER'S VEHICLE WAS EQUIPPED WITH SIDE AIR BAGS, AND NEITHER ONE OF THE SIDE AIR BAGS DEPLOYED. HE SAID THE VEHICLE WAS HIT PRETTY HARD AND THEY SHOULD HAVE DEPLOYED. THE DEALER TOLD HIM THAT THE AIR BAGS COULD DEPLOY IF HIT IN DIFFE…
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DT: THE CONTACT VEHICLE WAS INVOLVED IN A ACCIDENT LAST NIGHT LIKE IN THE CENTER OF VEHICLE. CONSUMER'S VEHICLE WAS EQUIPPED WITH SIDE AIR BAGS, AND NEITHER ONE OF THE SIDE AIR BAGS DEPLOYED. HE SAID THE VEHICLE WAS HIT PRETTY HARD AND THEY SHOULD HAVE DEPLOYED. THE DEALER TOLD HIM THAT THE AIR BAGS COULD DEPLOY IF HIT IN DIFFERENT POSITIONS, AND THAT MAYBE WAS THE REASON WHY THEY DID NOT DEPLOY. MANUFACTURER SAID PRETTY MUCH THE SAME THING, AND THAT THEY WOULD LOOK INTO IT. ALSO, MANUFACTURER SAID THAT IT COULD HAVE BEEN THE AIR BAGS MESSED UP, AND THEY WERE GOING TO DO AN INVESTIGATION. THE CONTACT DOES NOT FEEL SAFE IN THE VEHICLE SINCE THE AIR BAGS DID NOT DEPLOY.*AK
NHTSA ODI #10120571
Official recalls
0
No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
2004 Mercedes Benz 230 Problems, Complaints & Recalls | Skip That Year