2004 Toyota Prius problems by component
610 owner complaints filed with NHTSA for the 2004 Toyota Prius, grouped by the component owners reported. Each component links to a detailed breakdown with mileage, severity and owner reports.
| Component | Complaints | Share | Median mileage |
|---|---|---|---|
| Exterior Lighting → | 184 | 30% | 108,000 mi |
| Electrical System → | 177 | 29% | 32,500 mi |
| Engine and Engine Cooling → | 89 | 15% | 13,965 mi |
| Vehicle Speed Control → | 52 | 9% | 59,384 mi |
| Service Brakes, Hydraulic → | 39 | 6% | 56,000 mi |
| Power Train → | 34 | 6% | 73,318 mi |
| Service Brakes → | 21 | 3% | 138,000 mi |
| Air Bags → | 18 | 3% | 73,500 mi |
| Service Brakes, Electric → | 13 | 2% | 90,000 mi |
| Steering → | 10 | 2% | — |
| Engine | 9 | 1% | — |
| Visibility | 9 | 1% | — |
| Equipment | 7 | 1% | — |
| Electronic Stability Control (esc) | 6 | 1% | — |
| Fuel System, Gasoline | 6 | 1% | — |
| Seat Belts | 5 | 1% | — |
| Fuel/propulsion System | 4 | 1% | — |
| Fuel System, Other | 4 | 1% | — |
| Traction Control System | 4 | 1% | — |
| Parking Brake | 3 | 0% | — |
| Tires | 3 | 0% | — |
| Electronic Stability Control | 2 | 0% | — |
| Latches/locks/linkages | 2 | 0% | — |
| Structure | 2 | 0% | — |
| Suspension | 2 | 0% | — |
| Forward Collision Avoidance | 1 | 0% | — |
| Seats | 1 | 0% | — |
| Visibility/wiper | 1 | 0% | — |
| Wheels | 1 | 0% | — |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.