2015 Mercedes-Benz C300 engine problems
The 2015 Mercedes-Benz C300 has 129 engine complaints filed with NHTSA — 25% of the year's total, and up sharply from the prior model year.
129
Engine complaints
25%
Share of year
0
Crash-involved
0
Related recalls
Engine complaints by year
What owners report
“The contact owns a 2015 Mercedes-Benz C300. The contact stated that while driving approximately 50-60 MPH, the #1 piston cracked. The contact stated that while his daughter was driving, the vehicle was shaking and smoking. The check engine warning light illuminated. The vehicle was towed to an…”
Common questions
How many engine complaints does the 2015 Mercedes-Benz C300 have?
NHTSA has 129 complaints about the 2015 Mercedes-Benz C300 engine — 25% of all complaints filed for that model year.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.