2018 Hyundai Sonata vs 2020 Hyundai Sonata
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 | 2018 Hyundai Sonata | 2020 Hyundai Sonata |
|---|---|---|
| NHTSA complaints | 366 | 170 |
| Recall campaigns | 1 | 4 |
| Service bulletins (TSBs) | 204 | 99 |
| Investigations | 2 | 1 |
| Crash reports | 18 | 4 |
| Fire reports | 13 | 1 |
| NCAP overall rating | 5/5 | — |
| EPA MPG (combined) | 26–41 | 31–47 |
| Median reported incident mileage | 27,000 mi | 9,998 mi |
Reported problems side by side
| Component | Hyundai Sonata | Hyundai Sonata |
|---|---|---|
| Engine | 206 | 30 |
| Electrical System | 60 | 35 |
| Fuel/propulsion System | 30 | 45 |
| Power Train | 39 | 23 |
| Structure | 15 | 16 |
| Vehicle Speed Control | 19 | 7 |
| Exterior Lighting | 22 | 2 |
| Forward Collision Avoidance | 7 | 11 |
Symptoms owners describe
| Oil consumption | 68 | 0 |
| Check engine light | 60 | 27 |
| Stalling | 37 | 12 |
| Loss of power | 31 | 0 |
| Vibration / shaking | 21 | 6 |
| Misfire / rough idle | 16 | 0 |
| Hesitation / surging | 15 | 8 |
| Electrical failures | 13 | 6 |
2018 Hyundai Sonata
2020 Hyundai Sonata
Compare all Hyundai Sonata vs Hyundai Sonata 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.