2015 Kia Rio vs 2015 Mercedes-Benz C300
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 7, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2015 Kia Rio | 2015 Mercedes-Benz C300 |
|---|---|---|
| NHTSA complaints | 52 | 378 |
| Recall campaigns | 1 | 11 |
| Service bulletins (TSBs) | 100 | 129 |
| Investigations | 2 | 3 |
| Crash reports | 4 | 9 |
| Fire reports | 10 | 1 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 30 | 28 |
| Median reported incident mileage | 68,000 mi | 50,000 mi |
Reported problems side by side
| Component | Kia Rio | Mercedes-Benz C300 |
|---|---|---|
| Engine | 23 | 127 |
| Fuel/propulsion System | 1 | 66 |
| Electrical System | 9 | 50 |
| Structure | 2 | 57 |
| Steering | 1 | 23 |
| Suspension | 0 | 22 |
| Power Train | 1 | 20 |
| Air Bags | 5 | 12 |
Symptoms owners describe
| Check engine light | 7 | 42 |
| Stalling | 6 | 19 |
| Rust / corrosion | 0 | 25 |
| Vibration / shaking | 0 | 15 |
| Loss of power | 0 | 12 |
| Clunking / rattling | 0 | 7 |
| Steering problems | 0 | 6 |
| Misfire / rough idle | 0 | 5 |
2015 Kia Rio
2015 Mercedes-Benz C300
Compare all Kia Rio vs Mercedes-Benz C300 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.