2004 Toyota Prius vs 2006 Toyota Prius
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 8, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2004 Toyota Prius | 2006 Toyota Prius |
|---|---|---|
| NHTSA complaints | 610 | 1,439 |
| Recall campaigns | 6 | 6 |
| Service bulletins (TSBs) | 226 | 210 |
| Investigations | 3 | 3 |
| Crash reports | 38 | 82 |
| Fire reports | 2 | 5 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 46 | 46 |
| Median reported incident mileage | 75,000 mi | 50,000 mi |
Reported problems side by side
| Component | Toyota Prius | Toyota Prius |
|---|---|---|
| Exterior Lighting | 184 | 941 |
| Electrical System | 177 | 152 |
| Vehicle Speed Control | 52 | 84 |
| Service Brakes, Hydraulic | 39 | 94 |
| Engine and Engine Cooling | 89 | 20 |
| Service Brakes | 21 | 73 |
| Service Brakes, Electric | 13 | 45 |
| Power Train | 34 | 22 |
Symptoms owners describe
| Stalling | 100 | 51 |
| Loss of power | 48 | 9 |
| Check engine light | 27 | 10 |
| Brake problems | 11 | 41 |
| Hesitation / surging | 10 | 30 |
| Won’t start | 6 | 0 |
| Overheating | 0 | 9 |
| Electrical failures | 0 | 8 |
2004 Toyota Prius
2006 Toyota Prius
Compare all Toyota Prius vs Toyota Prius 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.