2004 Volvo S40 problems by component
48 owner complaints filed with NHTSA for the 2004 Volvo S40, grouped by the component owners reported. Each component links to a detailed breakdown with mileage, severity and owner reports.
| Component | Complaints | Share | Median mileage |
|---|---|---|---|
| Air Bags → | 11 | 23% | — |
| Electrical System → | 11 | 23% | — |
| Service Brakes, Hydraulic | 8 | 17% | — |
| Engine and Engine Cooling | 5 | 10% | — |
| Fuel System, Gasoline | 5 | 10% | — |
| Steering | 4 | 8% | — |
| Vehicle Speed Control | 4 | 8% | — |
| Service Brakes | 3 | 6% | — |
| Engine | 2 | 4% | — |
| Exterior Lighting | 2 | 4% | — |
| Fuel/propulsion System | 2 | 4% | — |
| Latches/locks/linkages | 2 | 4% | — |
| Structure | 2 | 4% | — |
| Visibility | 2 | 4% | — |
| Equipment | 1 | 2% | — |
| Forward Collision Avoidance | 1 | 2% | — |
| Fuel System, Other | 1 | 2% | — |
| Power Train | 1 | 2% | — |
| Service Brakes, Air | 1 | 2% | — |
| Suspension | 1 | 2% | — |
| Tires | 1 | 2% | — |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.