2020 Audi A4 vs 2020 Mercedes-Benz C 300
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Sep 21, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2020 Audi A4 | 2020 Mercedes-Benz C 300 |
|---|---|---|
| NHTSA complaints | 127 | 33 |
| Recall campaigns | 3 | 9 |
| Service bulletins (TSBs) | 1,060 | 178 |
| Investigations | 0 | 0 |
| Crash reports | 1 | 5 |
| Fire reports | 0 | 0 |
| NCAP overall rating | 5/5 | — |
| EPA MPG (combined) | 30 | 25–28 |
| Median reported incident mileage | — | — |
Reported problems side by side
| Component | Audi A4 | Mercedes-Benz C 300 |
|---|---|---|
| Electrical System | 91 | 3 |
| Back Over Prevention | 43 | 2 |
| Forward Collision Avoidance | 9 | 3 |
| Engine | 0 | 8 |
| Lane Departure | 6 | 1 |
| Structure | 0 | 4 |
| Fuel/propulsion System | 0 | 3 |
| Power Train | 0 | 3 |
Symptoms owners describe
| Check engine light | 0 | 5 |
2020 Audi A4
2020 Mercedes-Benz C 300
Compare all Audi A4 vs Mercedes-Benz C 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.