2014 Hyundai Sonata vs 2014 Mercedes-Benz S550
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 | 2014 Hyundai Sonata | 2014 Mercedes-Benz S550 |
|---|---|---|
| NHTSA complaints | 742 | 24 |
| Recall campaigns | 7 | 5 |
| Service bulletins (TSBs) | 178 | 133 |
| Investigations | 7 | 1 |
| Crash reports | 29 | 4 |
| Fire reports | 39 | 0 |
| NCAP overall rating | 5/5 | — |
| EPA MPG (combined) | 24–37 | 20 |
| Median reported incident mileage | 74,000 mi | — |
Reported problems side by side
| Component | Hyundai Sonata | Mercedes-Benz S550 |
|---|---|---|
| Engine | 299 | 0 |
| Electrical System | 135 | 1 |
| Exterior Lighting | 119 | 1 |
| Steering | 65 | 3 |
| Service Brakes | 57 | 2 |
| Power Train | 54 | 2 |
| Fuel/propulsion System | 49 | 2 |
| Fuel System, Gasoline | 38 | 0 |
Symptoms owners describe
| Stalling | 90 | 0 |
| Check engine light | 64 | 0 |
| Loss of power | 43 | 0 |
| Clunking / rattling | 41 | 0 |
| Won’t start | 17 | 0 |
| Hesitation / surging | 17 | 0 |
| Oil consumption | 16 | 0 |
| Vibration / shaking | 16 | 0 |
2014 Hyundai Sonata
2014 Mercedes-Benz S550
Compare all Hyundai Sonata vs Mercedes-Benz S550 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.