Mercedes-Benz GLC300 problems by year
231 owner complaints filed with NHTSA across 2 Mercedes-Benz GLC300 model years. Last verified Sep 22, 2026. Complaint totals are lifetime counts — years that have been on the road longer accumulate more reports.
| Year | Complaints | Recalls | Most reported problem | |
|---|---|---|---|---|
| 2017 | 98 | 12 | Engine | |
| 2016 | 133 | 12 | Engine |
How to read this. Complaints are unverified reports owners file with NHTSA’s Office of Defects Investigation, counted once per case number. Raw totals are not adjusted for sales volume, and recent model years have had less time on the road. “Most complained” flags years well above the model’s median; treat it as a signal for deeper research, not a verdict. This page is not affiliated with Mercedes-Benz.