2006 Kia Optima vs 2006 Nissan Altima
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 | 2006 Kia Optima | 2006 Nissan Altima |
|---|---|---|
| NHTSA complaints | 155 | 824 |
| Recall campaigns | 2 | 3 |
| Service bulletins (TSBs) | 37 | 79 |
| Investigations | 3 | 0 |
| Crash reports | 3 | 43 |
| Fire reports | 1 | 14 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 21–23 | 21–24 |
| Median reported incident mileage | 65,000 mi | 91,675 mi |
Reported problems side by side
| Component | Kia Optima | Nissan Altima |
|---|---|---|
| Structure | 12 | 221 |
| Engine and Engine Cooling | 9 | 189 |
| Engine | 7 | 166 |
| Electrical System | 23 | 72 |
| Power Train | 14 | 79 |
| Air Bags | 46 | 43 |
| Vehicle Speed Control | 7 | 38 |
| Latches/locks/linkages | 27 | 3 |
Symptoms owners describe
| Airbag warning light | 33 | 0 |
| Stalling | 9 | 123 |
| Rust / corrosion | 0 | 202 |
| Check engine light | 0 | 72 |
| Oil consumption | 0 | 59 |
| Hesitation / surging | 0 | 28 |
| Won’t start | 0 | 17 |
| Clunking / rattling | 0 | 15 |
2006 Kia Optima
2006 Nissan Altima
Compare all Kia Optima vs Nissan Altima 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.