2004 Mazda MPV vs 2004 Toyota Sienna
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 7, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2004 Mazda MPV | 2004 Toyota Sienna |
|---|---|---|
| NHTSA complaints | 71 | 2,062 |
| Recall campaigns | 5 | 10 |
| Service bulletins (TSBs) | 121 | 257 |
| Investigations | 3 | 8 |
| Crash reports | 2 | 51 |
| Fire reports | 1 | 8 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 18 | 18–20 |
| Median reported incident mileage | 55,000 mi | 75,000 mi |
Reported problems side by side
| Component | Mazda MPV | Toyota Sienna |
|---|---|---|
| Structure | 4 | 962 |
| Latches/locks/linkages | 1 | 308 |
| Steering | 0 | 159 |
| Electrical System | 13 | 132 |
| Tires | 3 | 124 |
| Vehicle Speed Control | 2 | 111 |
| Seat Belts | 0 | 98 |
| Power Train | 8 | 89 |
Symptoms owners describe
| Stalling | 6 | 60 |
| Check engine light | 6 | 9 |
| Hesitation / surging | 6 | 65 |
| Rust / corrosion | 0 | 110 |
| Clunking / rattling | 0 | 15 |
| Loss of power | 0 | 14 |
| Vibration / shaking | 0 | 13 |
| Steering problems | 0 | 10 |
2004 Mazda MPV
2004 Toyota Sienna
Compare all Mazda MPV 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.