2009 Audi A4 problems by component
120 owner complaints filed with NHTSA for the 2009 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 |
|---|---|---|---|
| Engine → | 44 | 37% | 84,000 mi |
| Air Bags → | 33 | 28% | — |
| Steering → | 15 | 13% | 29,900 mi |
| Fuel/propulsion System | 7 | 6% | — |
| Power Train | 6 | 5% | — |
| Structure | 6 | 5% | — |
| Visibility | 6 | 5% | — |
| Engine and Engine Cooling | 5 | 4% | — |
| Suspension | 5 | 4% | — |
| Exterior Lighting | 4 | 3% | — |
| Electrical System | 3 | 3% | — |
| Vehicle Speed Control | 3 | 3% | — |
| Seat Belts | 2 | 2% | — |
| Forward Collision Avoidance | 1 | 1% | — |
| Fuel System, Gasoline | 1 | 1% | — |
| Latches/locks/linkages | 1 | 1% | — |
| Seats | 1 | 1% | — |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.