2003 Chevrolet Trailblazer vs 2003 Isuzu Ascender
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 7, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2003 Chevrolet Trailblazer | 2003 Isuzu Ascender |
|---|---|---|
| NHTSA complaints | 901 | 35 |
| Recall campaigns | 8 | 5 |
| Service bulletins (TSBs) | 673 | 173 |
| Investigations | 8 | 3 |
| Crash reports | 68 | 2 |
| Fire reports | 14 | 0 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 15–16 | 14–16 |
| Median reported incident mileage | 76,000 mi | 41,500 mi |
Reported problems side by side
| Component | Chevrolet Trailblazer | Isuzu Ascender |
|---|---|---|
| Electrical System | 285 | 9 |
| Fuel System, Gasoline | 114 | 5 |
| Power Train | 103 | 4 |
| Exterior Lighting | 77 | 7 |
| Engine and Engine Cooling | 65 | 2 |
| Visibility | 64 | 1 |
| Air Bags | 57 | 1 |
| Fuel/propulsion System | 55 | 0 |
Symptoms owners describe
| Check engine light | 34 | 0 |
| Stalling | 32 | 0 |
| Rust / corrosion | 31 | 0 |
| Loss of power | 17 | 0 |
| Hesitation / surging | 11 | 0 |
| Electrical failures | 11 | 0 |
| Vibration / shaking | 11 | 0 |
| Clunking / rattling | 9 | 0 |
2003 Chevrolet Trailblazer
2003 Isuzu Ascender
Compare all Chevrolet Trailblazer vs Isuzu Ascender 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.