2020 Mercedes-Benz GLC 300 vs 2021 Mercedes-Benz GLC 300
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 8, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2020 Mercedes-Benz GLC 300 | 2021 Mercedes-Benz GLC 300 |
|---|---|---|
| NHTSA complaints | 67 | 61 |
| Recall campaigns | 16 | 9 |
| Service bulletins (TSBs) | 215 | 204 |
| Investigations | 0 | 0 |
| Crash reports | 3 | 1 |
| Fire reports | 0 | 1 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 24 | 25 |
| Median reported incident mileage | — | — |
Reported problems side by side
| Component | Mercedes-Benz GLC 300 | Mercedes-Benz GLC 300 |
|---|---|---|
| Engine | 20 | 29 |
| Exterior Lighting | 5 | 10 |
| Fuel/propulsion System | 4 | 9 |
| Electrical System | 5 | 7 |
| Back Over Prevention | 7 | 3 |
| Forward Collision Avoidance | 5 | 3 |
| Power Train | 4 | 3 |
| Structure | 3 | 3 |
Symptoms owners describe
| Check engine light | 10 | 15 |
| Stalling | 9 | 6 |
| Misfire / rough idle | 6 | 5 |
| Loss of power | 0 | 11 |
| Hesitation / surging | 0 | 5 |
| Vibration / shaking | 0 | 5 |
2020 Mercedes-Benz GLC 300
2021 Mercedes-Benz GLC 300
Compare all Mercedes-Benz GLC 300 vs Mercedes-Benz GLC 300 years →
Method. Complaints are unique NHTSA reports. A vehicle that sold more units will naturally accumulate more complaints — use shares and read the underlying reports before drawing conclusions.