Audi A4 service brakes, hydraulic problems by year
305 NHTSA owner complaints name the service brakes, hydraulic across 13 A4 model years. The most reported year is 1998 with 112 reports.
| Year | Service Brakes, Hydraulic reports | Share | Median mileage | |
|---|---|---|---|---|
| 2008 A4 | 1 | 1% | — | |
| 2007 A4 | 1 | 1% | — | |
| 2006 A4 | 1 | 0% | — | |
| 2005 A4 | 1 | 0% | — | |
| 2004 A4 | 4 | 2% | — | |
| 2003 A4 | 1 | 0% | — | |
| 2002 A4 | 3 | 2% | — | |
| 2001 A4 | 28 | 21% | 65,000 mi | |
| 2000 A4 | 47 | 49% | 81,925 mi | |
| 1999 A4 | 81 | 43% | 84,000 mi | |
| 1998 A4 | 112 | 43% | 82,500 mi | |
| 1997 A4 | 14 | 14% | — | |
| 1996 A4 | 11 | 12% | — |
Share is the fraction of that year’s complaints naming the service brakes, hydraulic. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.