2004 Chrysler 300M vs 2004 Mercury Grand Marquis
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 Chrysler 300M | 2004 Mercury Grand Marquis |
|---|---|---|
| NHTSA complaints | 71 | 347 |
| Recall campaigns | 1 | 1 |
| Service bulletins (TSBs) | 58 | 49 |
| Investigations | 0 | 5 |
| Crash reports | 4 | 17 |
| Fire reports | 0 | 4 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 19 | 18 |
| Median reported incident mileage | 60,806 mi | 82,500 mi |
Reported problems side by side
| Component | Chrysler 300M | Mercury Grand Marquis |
|---|---|---|
| Exterior Lighting | 6 | 206 |
| Steering | 8 | 65 |
| Electrical System | 14 | 40 |
| Vehicle Speed Control | 3 | 23 |
| Engine and Engine Cooling | 14 | 10 |
| Power Train | 12 | 9 |
| Air Bags | 12 | 6 |
| Structure | 9 | 8 |
Symptoms owners describe
| Stalling | 9 | 5 |
| Check engine light | 9 | 0 |
| Loss of power | 6 | 0 |
| Rust / corrosion | 0 | 16 |
| Hesitation / surging | 0 | 8 |
| Steering problems | 0 | 6 |
2004 Chrysler 300M
2004 Mercury Grand Marquis
Compare all Chrysler 300M vs Mercury Grand Marquis 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.