There are 3 owner-reported speed control & cruise complaints for the 2006 Mercedes-Benz C-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
WHILE DRIVING ON A CITY STREET IN STOP AND GO TRAFFIC, I NOTICED THAT THE CAR WAS NOT SHIFTING GEARS. THE TACHOMETER WOULD REV HIGH BUT THE VEHICLE WOULD NOT ACCELERATE IN ACCORDANCE WITH THE REVOLUTIONS. ONCE TRAFFIC FREED UP FROM A STOP AND GO 20 MILE/HR THE CAR WOULD NOT SHIFT GEARS AND REMAINED IN LIMP MODE. I BROUGHT THE CAR TO MY MECHANIC WHO CONFIRMED IT WAS A TRANSMISSION PROBLEM. THE CURRENT QUOTE TO REPLACE THE 7 SPEED 722.9 TRANSMISSION IS $2800 PARTS AND LABOR.
SUDDENLY DURING NORMAL DRIVING CONDITIONS, WHEN TRYING TO ACCELERATE THE CAR IS VERY SLUGGISH AND THE RPM ARE VERY HIGH. THIS HAPPENS WITHOUT WARNING INCREASING THE POTENTIAL FOR A CRASH. THE PROBLEM IS NORMALLY RECTIFIED TEMPORARILY BY RESTARTING THE VEHICLE. *TR
TL*THE CONTACT OWNS A 2006 MERCEDES BENZ C280. WHILE MAKING A LEFT TURN AT 5 MPH, THE VEHICLE SUDDENLY ACCELERATED AND REAR-ENDED THE PRECEDING VEHICLE. WHILE BACKING UP FROM THE CRASH, THE VEHICLE SPED BACKWARDS AND STRUCK THE VEHICLE IN ITS REAR. THE POLICE ISSUED A TICKET FOR $130 AND FILED A REPORT. THERE WERE NO INJURIES. THE VEHICLE IS CURRENTLY AT THE DEALER FOR INSPECTION AND REPAIR. THE FAILURE MILEAGE WAS 36,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026