2004 Mercedes Benz C230: Reliability Data
When Do Complaints Happen?
Distribution of NHTSA complaints by vehicle mileage at time of report.
What Fails?
Most reported component issues from NHTSA complaints.
Severity Assessment
Sample Complaint Reports
"TL*THE CONTACT OWNS A 2004 MERCEDES BENZ C230. WHILE DRIVING 65 MPH, THE VEHICLE'S CHECK ENGINE LIGHT ILLUMINATED. THIS FAILURE OCCURRED ON FOUR OCCASIONS. AFTER THE FIRST FAILURE, THE VEHICLE WAS TAKEN TO THE DEALER WHO WAS UNABLE TO FIND ANY FAILURE. AFTER THE SECOND FAILURE, THE DEALER CHANGE..."
"HESITATION (JERKING) UPON ACCELERATION, USUALLY DURING TURNS OR WHILE IN HEAVY TRAFFIC. THIS HAS BEEN AN ONGOING PROBLEM SINCE PURCHASE OF VEHICLE (NEW). I HAVE TAKEN IT IN FOR REPAIR FOR THIS PROBLEM NO LESS THAN SEVEN (7) TIMES, BUT THE PROBLEM STILL REMAINS. THERE IS ALSO A POPPING NOISE COMIN..."
"HESITATION (JERKING) UPON ACCELERATION, USUALLY DURING TURNS OR WHILE IN HEAVY TRAFFIC. THIS HAS BEEN AN ONGOING PROBLEM SINCE PURCHASE OF VEHICLE (NEW). I HAVE TAKEN IT IN FOR REPAIR FOR THIS PROBLEM NO LESS THAN SEVEN (7) TIMES, BUT THE PROBLEM STILL REMAINS. THERE IS ALSO A POPPING NOISE COMIN..."
Source: NHTSA ODI Complaints Database. Names and identifying details omitted.
When Were Complaints Filed?
Number of complaints by the year the issue occurred.
When Does Each Component Fail?
Median mileage at complaint for top components.
Where Are Complaints Coming From?
Top states by complaint count.
Who Files Complaints?
Mercedes Benz C230 — Other Years
See how this model compares across different model years.
Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.
Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.
Data through: 2026-03-28
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