Audi S4 engine and engine cooling problems by year
42 NHTSA owner complaints name the engine and engine cooling across 6 S4 model years. The most reported year is 2004 with 12 reports.
| Year | Engine and Engine Cooling reports | Share | Median mileage | |
|---|---|---|---|---|
| 2010 S4 | 11 | 18% | — | |
| 2005 S4 | 3 | 7% | — | |
| 2004 S4 | 12 | 41% | 54,000 mi | |
| 2002 S4 | 1 | 5% | — | |
| 2001 S4 | 11 | 13% | — | |
| 2000 S4 | 4 | 3% | — |
Share is the fraction of that year’s complaints naming the engine and engine cooling. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.