Equal-exposure complaint evidence and changes in the reported problem mix
2012 vs 2013 KIA OPTIMA
NHTSA Consumer Complaints complaints · snapshot 2026-08-21
Share shifts show how a vehicle's problem mix changed. They do not measure reliability, and complaint counts are not normalized for sales volume.
First 167 months on market for each model year
Exposure window calculated through Aug 22, 2026
Age-matched reports
▲ 43.4% more reports in the equal exposure window
NHTSA Consumer Complaints complaints · snapshot 2026-08-21
Component share shift
Bars start at the neutral midpoint. Left means a smaller share; right means a larger share.
View component share data as a table
| Component | 2012 share | 2013 share | Share change |
|---|---|---|---|
| STRUCTURE | 2.2% | 6.2% | ▲ 4.0 pts larger share |
| STEERING | 17.0% | 13.7% | ▼ 3.3 pts smaller share |
| FUEL SYSTEM | 3.9% | 6.1% | ▲ 2.2 pts larger share |
| ENGINE | 36.7% | 34.6% | ▼ 2.1 pts smaller share |
| POWER TRAIN | 4.6% | 3.2% | ▼ 1.4 pts smaller share |
| ELECTRICAL SYSTEM | 5.4% | 4.1% | ▼ 1.3 pts smaller share |
| VISIBILITY | 2.2% | 1.3% | ▼ 0.9 pts smaller share |
| VEHICLE SPEED CONTROL | 2.9% | 2.1% | ▼ 0.8 pts smaller share |
| SEAT BELTS | 0.5% | 1.1% | ▲ 0.6 pts larger share |
| SERVICE BRAKES | 6.5% | 6.0% | ▼ 0.4 pts smaller share |
| EXTERIOR LIGHTING | 2.6% | 2.3% | ▼ 0.3 pts smaller share |
| SUSPENSION | 1.4% | 1.1% | ▼ 0.3 pts smaller share |
| WHEELS | 0.9% | 1.1% | ▲ 0.2 pts larger share |
| TIRES | 0.3% | 0.1% | ▼ 0.2 pts smaller share |
| FORWARD COLLISION AVOIDANCE | 0.1% | 0.1% | ▲ 0.0 pts larger share |
| AIR BAGS | 2.3% | 2.3% | ◆ 0.0 pts unchanged |
| UNKNOWN OR OTHER | 19.0% | 27.7% | ▲ 8.6 pts larger share |
recalls · none on file
Recall campaigns
2012 0
Campaign components: not reported
2013 0
Campaign components: not reported
NHTSA Consumer Complaints complaints · snapshot 2026-08-21
Safety signals
- ◆ Fires
- 82 → 115
- ◆ Injuries
- 36 → 37