2021 Mercedes-Benz Glc 300 engine problems
The 2021 Mercedes-Benz Glc 300 has 29 engine complaints filed with NHTSA — 35% of the year's total, and up sharply from the prior model year.
29
Engine complaints
35%
Share of year
1
Crash-involved
0
Related recalls
Engine complaints by year
What owners report
“The contact owns a 2021 Mercedes Benz GLC 300. The contact stated that while driving at various speeds, the vehicle would lose power and fail to accelerate upon the depression of the accelerator pedal. The check engine light would appear on the instrument panel. Despite the failure, the vehicle…”
Common questions
How many engine complaints does the 2021 Mercedes-Benz Glc 300 have?
NHTSA has 29 complaints about the 2021 Mercedes-Benz Glc 300 engine — 35% 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.