2015 BMW 528I vs 2015 Kia Optima
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Sep 21, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2015 BMW 528I | 2015 Kia Optima |
|---|---|---|
| NHTSA complaints | 65 | 1,007 |
| Recall campaigns | 1 | 4 |
| Service bulletins (TSBs) | 271 | 200 |
| Investigations | 1 | 4 |
| Crash reports | 1 | 31 |
| Fire reports | 5 | 74 |
| NCAP overall rating | 5/5 | 5/5 |
| EPA MPG (combined) | 26 | 24–37 |
| Median reported incident mileage | 82,000 mi | 80,318 mi |
Reported problems side by side
| Component | BMW 528I | Kia Optima |
|---|---|---|
| Engine | 14 | 621 |
| Electrical System | 36 | 135 |
| Structure | 5 | 76 |
| Steering | 0 | 69 |
| Engine and Engine Cooling | 33 | 31 |
| Power Train | 3 | 49 |
| Service Brakes | 0 | 49 |
| Fuel/propulsion System | 2 | 46 |
Symptoms owners describe
| Overheating | 8 | 0 |
| Stalling | 0 | 155 |
| Check engine light | 0 | 102 |
| Clunking / rattling | 0 | 70 |
| Loss of power | 0 | 60 |
| Oil consumption | 0 | 32 |
| Rust / corrosion | 0 | 27 |
| Won’t start | 0 | 25 |
2015 BMW 528I
2015 Kia Optima
Compare all BMW 528I 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.