WHEN STARTING UP THE VEHICLE MAKE A TERRIBLE NOISE THAT LAST FOR 3-4 SECONDS BEFORE IT GOES AWAY. THE VEHICLE WAS VERIFIED BY A MERCEDES TECHNICIAN AND THE DIAGNOSTICS CAME BACK STATING AN ISSUE WITH THE "CAMSHAFT ADJUSTERS (INTERNAL FAULT)". I WAS TOLD THIS CONDITION WILL GET WORSE AND FINALLY ENGINE WILL STALL AND MAJOR DAMAGES WILL HAPPEN. WORST SCENARIO COULD PRODUCE BENT VALVES AND WILL REQU…
2012 mercedes-benz C-Class engine problems
severe 58 complaints filed with NHTSA · avg repair $3,100
Complaints
58
Recalls
0
Crashes
0
Avg fix
$3,100
What owners are reporting 1 most recent
Common questions
How serious is the engine problem on the 2012 mercedes-benz C-Class?
It's a meaningful issue. 58 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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