Infiniti M45: which model years draw the most owner complaints?
280 complaints filed with NHTSA about the Infiniti M45, model years 2003 to 2010. One model year stands out for the engine or transmission: 2003 (engine). 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 M45FEW REPORTS | 129 | engine | 2 | |
| 2004 M45FEW REPORTS | 43 | — | 2 | |
| 2006 M45FEW REPORTS | 72 | — | 6 | |
| 2007 M45FEW REPORTS | 27 | — | 5 | |
| 2008 M45FEW REPORTS | 6 | — | 6 | |
| 2009 M45FEW REPORTS | 2 | — | 6 | |
| 2010 M45FEW REPORTS | 1 | — | 6 |
"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 Infiniti models
Infiniti FX35 · Infiniti G35 · Infiniti G37 · Infiniti I35 · Infiniti JX35 · Infiniti M35 · Infiniti Q50 · Infiniti QX4 · Infiniti QX50 · Infiniti QX56 · Infiniti QX60. 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: