2004 Mercury Monterey vs 2004 Toyota Sienna
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 8, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2004 Mercury Monterey | 2004 Toyota Sienna |
|---|---|---|
| NHTSA complaints | 283 | 2,062 |
| Recall campaigns | 4 | 10 |
| Service bulletins (TSBs) | 60 | 257 |
| Investigations | 7 | 8 |
| Crash reports | 2 | 51 |
| Fire reports | 6 | 8 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 17 | 18–20 |
| Median reported incident mileage | 78,000 mi | 75,000 mi |
Reported problems side by side
| Component | Mercury Monterey | Toyota Sienna |
|---|---|---|
| Structure | 19 | 962 |
| Latches/locks/linkages | 2 | 308 |
| Power Train | 203 | 89 |
| Steering | 8 | 159 |
| Electrical System | 11 | 132 |
| Tires | 2 | 124 |
| Vehicle Speed Control | 11 | 111 |
| Seat Belts | 2 | 98 |
Symptoms owners describe
| Loss of power | 27 | 14 |
| Rust / corrosion | 24 | 110 |
| Stalling | 23 | 60 |
| Check engine light | 8 | 9 |
| Hesitation / surging | 7 | 65 |
| Vibration / shaking | 5 | 13 |
| Clunking / rattling | 0 | 15 |
| Steering problems | 0 | 10 |
2004 Mercury Monterey
2004 Toyota Sienna
Compare all Mercury Monterey vs Toyota Sienna years →
Method. Complaints are unique NHTSA reports. A vehicle that sold more units will naturally accumulate more complaints — use shares and read the underlying reports before drawing conclusions.