| Issue ID | 1057194 |
| Internal NHTSA # | 10579288 |
| Manufacurer | Mercedes-Benz USA, LLC. |
| Brand | MERCEDES BENZ |
| Model | C63 |
| Model Year | 2009 |
| File date | 13/01/14 |
| Component | ENGINE |
| Product type code | VEHICLE |
| Description of the problem | The vehicle experienced a headbolt failure resulting in coolant flooding one of the cylinder, leaking inside the engine and causing engine failure. I was lucky that i was driving at 20mph at the time of the failure, otherwise it would most likely result in a crash. Mercedes-benz usa denies the widespread nature of the problem affecting all of the m156 engines, even through in 2010 mercedes-benz issued a service bulletin directing replacement of the headbolts with the new improved design and i personally know 3 other owners whose vehicle experienced exactly the same problem. Mercedes-benz would not recall the affected engines as it would cost them millions of dollars, instead they chose to put the consumers at risk and have the consumers cover the repair cost as the failure tends to happen shortly after the base warranty expires. *js |
| Vehicle Mileage at Failure | 43639 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | LINCOLNSHIRE, IL |
| VIN pattern | WDDGF77XX9FXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | |
| Was part original equipment? | |
| No. of injured persons | 0 |
| No. of fatalities | 0 |
| Date of purchase | 07/08/26 |
| Was original owner? | N |
| Anti-lock brakes | N |
| Cruise control | N |
| Number of cylinders | 8 |
| Drive train type | RWD |
| Transmission type | |
| Vehicle speed | 20 |
| DoT tire identifier | |
| Tire size | |
| Location of tire code | |
| Type of tire failure code | |
| Was defective tire repaired? | |
| Date of manufacture | |
| Type of child seat code | |
| Type of restraint | |
| Dealer's name | |
| Dealer's telephone number | |
| Dealer's city | |
| Dealer's state code | |
| Dealer's ZIP code |