Chevrolet Trailblazer vs Isuzu Ascender
Owner complaints, worst years and recall history side by side, from official NHTSA data. Last verified Aug 8, 2026. Raw complaint counts are not adjusted for sales volume.
Chevrolet Trailblazer
- Total complaints
- 7,110
- Avg per model year
- 419
- Recall campaigns (all years)
- 28
- Most complained year
- 2005 (1,466)
Top problems: Electrical System, Fuel System, Gasoline, Exterior Lighting
Isuzu Ascender
- Total complaints
- 195
- Avg per model year
- 41
- Recall campaigns (all years)
- 12
- Most complained year
- 2005 (64)
Top problems: Electrical System, Fuel System, Gasoline, Exterior Lighting
Complaints by model year
| Year | Chevrolet Trailblazer | Isuzu Ascender | ||
|---|---|---|---|---|
| 2007 | 732 | 10 | ||
| 2006 | 1,107 | 32 | ||
| 2005 | 1,466 | 64 | ||
| 2004 | 1,081 | 64 | ||
| 2003 | 901 | 35 |
Method. Complaints are unique NHTSA reports per model year. A model that sold more units will naturally accumulate more complaints — compare the shape across years, not just the raw totals, and read the year pages for what actually fails.