2003 Lexus LS430 vs 2003 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 | 2003 Lexus LS430 | 2003 Mercury Grand Marquis |
|---|---|---|
| NHTSA complaints | 23 | 362 |
| Recall campaigns | 0 | 1 |
| Service bulletins (TSBs) | 64 | 90 |
| Investigations | 0 | 6 |
| Crash reports | 3 | 22 |
| Fire reports | 0 | 2 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 19 | 18 |
| Median reported incident mileage | — | 87,000 mi |
Reported problems side by side
| Component | Lexus LS430 | Mercury Grand Marquis |
|---|---|---|
| Exterior Lighting | 0 | 207 |
| Electrical System | 0 | 51 |
| Vehicle Speed Control | 3 | 27 |
| Steering | 0 | 28 |
| Suspension | 0 | 28 |
| Structure | 8 | 9 |
| Air Bags | 3 | 11 |
| Engine and Engine Cooling | 1 | 13 |
Symptoms owners describe
| Stalling | 0 | 15 |
| Rust / corrosion | 0 | 10 |
| Vibration / shaking | 0 | 5 |
2003 Lexus LS430
2003 Mercury Grand Marquis
Compare all Lexus LS430 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.