Cadillac STS engine problems by year
45 NHTSA owner complaints name the engine across 4 STS model years. The most reported year is 2006 with 20 reports.
| Year | Engine reports | Share | Median mileage | |
|---|---|---|---|---|
| 2008 STS | 9 | 18% | — | |
| 2007 STS | 4 | 8% | — | |
| 2006 STS | 20 | 14% | 77,403 mi | |
| 2005 STS | 12 | 12% | 100,500 mi |
Share is the fraction of that year’s complaints naming the engine. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.