Equal-exposure complaint evidence and changes in the reported problem mix
1990 vs 1991 PONTIAC GRAND PRIX
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 431 months on market for each model year
Exposure window calculated through Aug 22, 2026
Age-matched reports
▼ 2.8% fewer 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 | 1990 share | 1991 share | Share change |
|---|---|---|---|
| SERVICE BRAKES | 47.2% | 39.2% | ▼ 8.0 pts smaller share |
| SUSPENSION | 6.3% | 2.3% | ▼ 3.9 pts smaller share |
| STRUCTURE | 11.9% | 15.2% | ▲ 3.3 pts larger share |
| EXTERIOR LIGHTING | 4.0% | 7.0% | ▲ 3.0 pts larger share |
| FUEL SYSTEM | not reported | 2.9% | ▲ 2.9 pts larger share |
| PARKING BRAKE | 2.8% | not reported | ▼ 2.8 pts smaller share |
| STEERING | 5.1% | 7.0% | ▲ 1.9 pts larger share |
| VEHICLE SPEED CONTROL | 0.6% | 1.8% | ▲ 1.2 pts larger share |
| VISIBILITY | not reported | 1.2% | ▲ 1.2 pts larger share |
| POWER TRAIN | 1.1% | not reported | ▼ 1.1 pts smaller share |
| SEAT BELTS | 1.7% | 0.6% | ▼ 1.1 pts smaller share |
| WHEELS | 1.1% | 1.8% | ▲ 0.6 pts larger share |
| TIRES | not reported | 0.6% | ▲ 0.6 pts larger share |
| ENGINE | 7.4% | 7.0% | ▼ 0.4 pts smaller share |
| ELECTRICAL SYSTEM | 8.0% | 8.2% | ▲ 0.2 pts larger share |
| UNKNOWN OR OTHER | 84.1% | 78.4% | ▼ 5.7 pts smaller share |
NHTSA Safety Recalls recalls · snapshot 2026-08-22
Recall campaigns
Campaign components: EXTERIOR LIGHTING and FUEL SYSTEM, GASOLINE
Campaign components: ELECTRICAL SYSTEM and FUEL SYSTEM, OTHER
NHTSA Consumer Complaints complaints · snapshot 2026-08-21
Safety signals
- ◆ Fires
- 2 → 4
- ◆ Injuries
- 11 → 8