Mercury Monterey vs Toyota Sienna
Owner complaints, worst years and recall history side by side, from official NHTSA data. Last verified Aug 8, 2026. Raw complaint counts are not adjusted for sales volume.
Mercury Monterey
- Total complaints
- 446
- Avg per model year
- 113
- Recall campaigns (all years)
- 5
- Most complained year
- 2004 (283)
Top problems: Power Train, Structure, Seats
Toyota Sienna
- Total complaints
- 8,809
- Avg per model year
- 339
- Recall campaigns (all years)
- 52
- Most complained year
- 2004 (2,062)
Top problems: Structure, Air Bags, Latches/locks/linkages
Complaints by model year
| Year | Mercury Monterey | Toyota Sienna | ||
|---|---|---|---|---|
| 2007 | 7 | 364 | ||
| 2006 | 44 | 1,016 | ||
| 2005 | 119 | 1,130 | ||
| 2004 | 283 | 2,062 |
Method. Complaints are unique NHTSA reports per model year. A model that sold more units will naturally accumulate more complaints — compare the shape across years, not just the raw totals, and read the year pages for what actually fails.