Mercedes-Benz / C300 / 2015
2015 Mercedes-Benz C300 problems
Owners have filed 514 complaints about the 2015 Mercedes-Benz C300 with NHTSA. Engine accounts for 24.7% of them — the clear leader, ahead of fuel/propulsion system at 12.8%.
Complaints514
Crashes14
Fires1
Injuries9
Deaths0
What owners report breaking
Engine 24.7% · 127
Fuel/propulsion system 12.8% · 66
Unknown or other 12.3% · 63
Structure 11.3% · 58
Electrical system 9.7% · 50
Steering 4.5% · 23
Suspension 4.3% · 22
Power train 3.9% · 20
Severity
Of those complaints, 14 describe a crash, 1 describe a fire and 9 report an injury.
Reading the numbers
Across the 9 model years of the Mercedes-Benz C300 in this data, 2015 sits 5th by complaint volume. 2008 draws the most.
Filings have fallen off, 111 in the last three years against 223 in the three before. The issues here may already have been addressed.
The median odometer reading at the time of complaint was 41,500 miles.
In owners' own words
My 2015 Mercedes Benz vehicle is rarely driven as I took public transportation to work and has ~55000 miles. However, the engine has started throwing error code P052E verified by an independent dealer - crankcase ventilation valve failure. It means the engine could shut off amid driving and I did research and it seems like a very common issue that Mercedes Benz car owner encounter and feels like a severe car defect. Engine
These cars have a known wrist pin failure, mercedes refuses to cover the cost of repairs as its not a recall. My vehicle is the specific model and year this is known for, and my car is making these piston slapping sounds, worse everyday. Worse on deceleration, goes away when warmed up, just like the reports. I am afraid I'll lose power while driving and hurt myself or others. Engine
Cylinder #1 losing compression. Onset acute after exiting freeway. Car lost power. Engine warning light turned on. Independent repair shop advised compression problem in Cylinder #1. Dealer then inspected and advised there was compression loss in Cylinder #1. Dealer recommended engine replacement (not repair). The car only has around 46,000 miles and is a 2015 model. Engine
Verbatim from NHTSA filings. Complaints are unverified owner reports.
Safety recalls
Checking NHTSA for open recalls…