2017 Kia Cadenza vs 2017 Kia Optima
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 | 2017 Kia Cadenza | 2017 Kia Optima |
|---|---|---|
| NHTSA complaints | 31 | 252 |
| Recall campaigns | 2 | 3 |
| Service bulletins (TSBs) | 72 | 179 |
| Investigations | 1 | 3 |
| Crash reports | 4 | 4 |
| Fire reports | 1 | 9 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 23 | 25–42 |
| Median reported incident mileage | — | 61,000 mi |
Reported problems side by side
| Component | Kia Cadenza | Kia Optima |
|---|---|---|
| Engine | 10 | 161 |
| Electrical System | 6 | 25 |
| Fuel/propulsion System | 5 | 20 |
| Power Train | 0 | 20 |
| Exterior Lighting | 0 | 15 |
| Vehicle Speed Control | 1 | 13 |
| Steering | 1 | 11 |
| Seat Belts | 2 | 8 |
Symptoms owners describe
| Check engine light | 0 | 43 |
| Oil consumption | 0 | 38 |
| Stalling | 0 | 26 |
| Loss of power | 0 | 24 |
| Clunking / rattling | 0 | 16 |
| Hesitation / surging | 0 | 14 |
| Vibration / shaking | 0 | 10 |
| Misfire / rough idle | 0 | 7 |
2017 Kia Cadenza
2017 Kia Optima
Compare all Kia Cadenza vs Kia Optima 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.