Scion xB: which model years draw the most owner complaints?
1,048 complaints filed with NHTSA about the Scion xB, model years 2003 to 2015. One model year stands out for the engine or transmission: 2008 (engine 4.1×). Quietest mature years by complaint count: 2004, 2012, 2011. 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 |
|---|---|---|---|---|
| 2003 xBFEW REPORTS | 1 | — | 2 | |
| 2004 xBFEW REPORTS | 37 | quiet: 1 of 8 | 6 | |
| 2005 xBFEW REPORTS | 92 | — | 7 | |
| 2006 xB | 253 | — | 11 | |
| 2007 xBFEW REPORTS | 3 | — | 5 | |
| 2008 xB | 339 | engine 4.1× | 9 | |
| 2009 xBFEW REPORTS | 140 | — | 11 | |
| 2010 xBFEW REPORTS | 55 | — | 8 | |
| 2011 xBFEW REPORTS | 54 | quiet: 3 of 8 | 6 | |
| 2012 xBFEW REPORTS | 45 | quiet: 2 of 8 | 4 | |
| 2013 xBFEW REPORTS | 14 | — | 3 | |
| 2014 xBFEW REPORTS | 9 | — | 3 | |
| 2015 xBFEW REPORTS | 6 | — | 3 |
"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 Scion models
Scion FR-S · Scion tC. 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: 20062008