2016 Mercedes-Benz GLC 300 Engine Problems

NHTSA component category: ENGINE · data through 07/14/2026

38Engine complaints

28.8%Of all 132 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

ENGINE38 · 28.8%

SERVICE BRAKES27 · 20.5%

Unspecified / other21 · 15.9%

FUEL/PROPULSION SYSTEM18 · 13.6%

AIR BAGS12 · 9.1%

Share of the 132 complaints citing each category; one complaint can cite several. Full breakdown on the 2016 Mercedes-Benz GLC 300 overview page.

What owners report

“The P052E error has popped up which requires the replacement of the PVC assembly. This is a known issue with these engines and causes the…”NHTSA complaint 11553798 — filed 11/06/2023

“2016 GLC300 - Fault code P052E71 positive crankcase ventilation regulatory valve displayed on console. I reset code and it came up again in a few…”NHTSA complaint 11510134 — filed 03/04/2023

“Check Engine light P052E came on while driving. No collision, normal conditions other than first very cold night of the season. Looked it up and…”NHTSA complaint 11499425 — filed 12/29/2022

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 GLC 300 have engine problems?

Engine is the most-reported problem area on the 2016 Mercedes-Benz GLC 300: 38 of 132 complaints on file (28.8%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2016 Mercedes-Benz GLC 300 have in total?

132 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 9 involved a crash, 2 involved a fire, 5 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 07/14/2026.