Audi A4 service brakes, air problems by year
18 NHTSA owner complaints name the service brakes, air across 3 A4 model years. The most reported year is 1998 with 10 reports.
| Year | Service Brakes, Air reports | Share | Median mileage | |
|---|---|---|---|---|
| 2001 A4 | 2 | 2% | — | |
| 1999 A4 | 6 | 3% | — | |
| 1998 A4 | 10 | 4% | — |
Share is the fraction of that year’s complaints naming the service brakes, air. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.