2004 Audi A4 problems by component
189 owner complaints filed with NHTSA for the 2004 Audi A4, grouped by the component owners reported. Each component links to a detailed breakdown with mileage, severity and owner reports.
| Component | Complaints | Share | Median mileage |
|---|---|---|---|
| Fuel System, Gasoline → | 46 | 24% | 61,000 mi |
| Air Bags → | 26 | 14% | 78,224 mi |
| Engine and Engine Cooling → | 18 | 10% | 60,250 mi |
| Tires → | 16 | 8% | 6,500 mi |
| Vehicle Speed Control → | 16 | 8% | 48,500 mi |
| Visibility → | 16 | 8% | 53,000 mi |
| Electrical System → | 15 | 8% | — |
| Exterior Lighting → | 14 | 7% | 80,000 mi |
| Power Train → | 12 | 6% | — |
| Engine | 7 | 4% | — |
| Fuel/propulsion System | 5 | 3% | — |
| Fuel System, Other | 5 | 3% | — |
| Service Brakes, Hydraulic | 4 | 2% | — |
| Structure | 4 | 2% | — |
| Equipment | 3 | 2% | — |
| Steering | 3 | 2% | — |
| Seat Belts | 1 | 1% | — |
| Service Brakes | 1 | 1% | — |
| Suspension | 1 | 1% | — |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.