Cadillac STS: which model years draw the most owner complaints?
414 complaints filed with NHTSA about the Cadillac STS, model years 2000 to 2011. No model year stands out for the engine or transmission against the others. Counts of unverified owner reports, compared only with other years of the same model; not failure rates.
Complaints by model year
| MODEL YEAR | COMPLAINTS | VS OTHER YEARS | STANDS OUT | RECALLS |
|---|---|---|---|---|
| 2000 STSFEW REPORTS | 12 | — | 1 | |
| 2001 STSFEW REPORTS | 12 | — | 0 | |
| 2002 STSFEW REPORTS | 7 | — | 0 | |
| 2003 STSFEW REPORTS | 8 | — | 0 | |
| 2004 STSFEW REPORTS | 7 | — | 0 | |
| 2005 STSFEW REPORTS | 101 | — | 3 | |
| 2006 STSFEW REPORTS | 139 | — | 4 | |
| 2007 STSFEW REPORTS | 52 | — | 2 | |
| 2008 STSFEW REPORTS | 50 | — | 1 | |
| 2009 STSFEW REPORTS | 15 | — | 0 | |
| 2010 STSFEW REPORTS | 4 | — | 0 | |
| 2011 STSFEW REPORTS | 7 | — | 0 |
"Stands out" = 40 or more complaints naming that system and at least twice the model's quiet (lower-quartile) year, or twice the share seen across every vehicle of that model year. Newer years have had less time on the road. "Quiet" ranks only years with 7+ years on the road and 20+ complaints. NHTSA data through November 2026.
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Other Cadillac models
Cadillac ATS · Cadillac CTS · Cadillac DTS · Cadillac Deville · Cadillac Escalade · Cadillac Escalade ESV · Cadillac Lyriq · Cadillac SRX · Cadillac Seville · Cadillac XT5 · Cadillac XTS. All makes and models.
Source: NHTSA public complaints, recalls, service bulletin and investigation databases, data received through November 2026. Complaints are unverified reports from owners, not failure rates: sales volumes are unknown, so a model year is only compared with other years of the same model. Not a diagnosis and not financial advice. PulsCar is not affiliated with NHTSA. Year pages: