2016 Mercedes-Benz C300 Engine Problems

NHTSA component category: ENGINE · data through 07/12/2026

93Engine complaints

32.6%Of all 285 complaints

#1Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How engine ranks on this vehicle

ENGINE93 · 32.6%

Unspecified / other64 · 22.5%

FUEL/PROPULSION SYSTEM57 · 20%

ELECTRICAL SYSTEM31 · 10.9%

STRUCTURE:BODY24 · 8.4%

Share of the 285 complaints citing each category; one complaint can cite several. Full breakdown on the 2016 Mercedes-Benz C300 overview page.

What owners report

“2016 MB C300 41000 miles. Check engine light went on. Autozone code reader said p052e positive crankcase ventilationregulation value performance.”NHTSA complaint 11498245 — filed 12/20/2022

“Cylinder 1 misfire initially, after taking it to an independent shop it was a piston 1 failure and required the small block to be replaced…”NHTSA complaint 11495006 — filed 11/27/2022

“The crank case ventilation valve is bad. This part should be easily changed but the dealer wants over $3000. Happened at 62,000 miles.”NHTSA complaint 11494627 — filed 11/22/2022

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Engine complaints by year filed

Frequently asked questions

Does the 2016 Mercedes-Benz C300 have engine problems?

Engine is the most-reported problem area on the 2016 Mercedes-Benz C300: 93 of 285 complaints on file (32.6%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2016 Mercedes-Benz C300 have in total?

285 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 7 involved a crash, 5 involved a fire, 8 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/12/2026.