AI DamageMercury Grand Marquis: problems, complaints, bulletins
Summary for the Mercury Grand Marquis across 34 model years: 3,961 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
| Year | Owner complaints | involving a crash | Technical service bulletins (TSB) | YouTube repair videos |
|---|---|---|---|---|
| 9999 | 8 | 1 | 0 | 0 |
| 2011 | 9 | 0 | 0 | 0 |
| 2010 | 25 | 6 | 0 | 0 |
| 2009 | 26 | 3 | 0 | 0 |
| 2008 | 80 | 11 | 0 | 0 |
| 2007 | 96 | 6 | 0 | 0 |
| 2006 | 143 | 16 | 0 | 0 |
| 2005 | 488 | 24 | 0 | 0 |
| 2004 | 348 | 17 | 0 | 0 |
| 2003 | 362 | 22 | 0 | 0 |
| 2002 | 78 | 8 | 0 | 0 |
| 2001 | 157 | 26 | 0 | 0 |
| 2000 | 162 | 14 | 0 | 0 |
| 1999 | 164 | 17 | 0 | 0 |
| 1998 | 143 | 8 | 0 | 0 |
| 1997 | 316 | 11 | 0 | 0 |
| 1996 | 239 | 9 | 0 | 0 |
| 1995 | 179 | 19 | 0 | 0 |
| 1994 | 156 | 17 | 0 | 0 |
| 1993 | 144 | 9 | 0 | 0 |
| 1992 | 255 | 23 | 0 | 0 |
| 1991 | 82 | 12 | 0 | 0 |
| 1990 | 56 | 6 | 0 | 0 |
| 1989 | 58 | 8 | 0 | 0 |
| 1988 | 73 | 9 | 0 | 0 |
| 1987 | 43 | 2 | 0 | 0 |
| 1986 | 21 | 0 | 0 | 0 |
| 1985 | 21 | 0 | 0 | 0 |
| 1984 | 15 | 2 | 0 | 0 |
| 1983 | 7 | 0 | 0 | 0 |
| 1982 | 3 | 0 | 0 | 0 |
| 1981 | 2 | 0 | 0 | 0 |
| 1978 | 1 | 0 | 0 | 0 |
| 1977 | 1 | 0 | 0 | 0 |
What fails most often
- 1 Exterior lighting 23% of all complaints
- 2 Electrical system 13% of all complaints
- 3 Vehicle speed control 11% of all complaints
- 4 Engine and cooling 11% of all complaints
- 5 Steering 9% of all complaints
- 6 Service brakes 8% of all complaints
- 7 Air bags 6% of all complaints
- 8 Powertrain 6% of all complaints
- Exterior lighting: 907 complaints (23% of all), 11 of them with a crash reported by the owner.
- Electrical system: 519 complaints (13% of all), 14 of them with a crash reported by the owner.
- Vehicle speed control: 453 complaints (11% of all), 125 of them with a crash reported by the owner.
- Engine and cooling: 448 complaints (11% of all), 7 of them with a crash reported by the owner.
- Steering: 354 complaints (9% of all), 22 of them with a crash reported by the owner.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 4.6 L · petrol · 8 cyl 1992–2011named in 21 complaints
- 5 L · petrol · 8 cyl 1984–1991named in 1 complaints
- automatic, 4-speed 1984–2011
Drive: RWD
Symptoms owners describe
How many of the 3,961 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Exterior lighting | 907 | 11 | 0 |
| Electrical system | 519 | 14 | 0 |
| Vehicle speed control | 453 | 125 | 0 |
| Engine and cooling | 448 | 7 | 0 |
| Steering | 354 | 22 | 0 |
| Service brakes | 324 | 41 | 0 |
| Air bags | 240 | 91 | 0 |
| Powertrain | 227 | 13 | 0 |
| Suspension | 178 | 9 | 0 |
| Visibility | 160 | 0 | 0 |
| Fuel system | 156 | 4 | 0 |
| Seat belts | 151 | 12 | 0 |
| Structure | 147 | 8 | 0 |
| Tires | 113 | 8 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
the lower bearing separates, the vehicle may experience a loss of steering, increasing the risk of a crash. Improper servicing of the upper intermediate shaft could cause the shaft to separate, which can then result in a loss of steering control, and increasing the risk of a crash
The contact stated that the wheels were squealing. The contact stated that the failure occurred while approaching a stop light. The contact's vehicle rear-ended the vehicle in front of his vehicle. The contact's vehicle was damaged to the front bumper. The vehicle was driven to the contact's residence.
Its the LCM L(IGHT CONTROL MODULE)...HEAD LIGHTS went out on me one night coming down [XXX] causing me to wreck in a ditch and hitting a light pole INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
My significant other and I were in an accident on the interstate. The airbags deployed and the seat belts failed to lock in place.
An SUV crashed into an apple store in Hingham Mass. The driver told police his foot became stuck to the gas pedal. More likely his foot became hooked under the brake pedal as he tried to quickly shift his foot from the gas pedal up and to the left onto the brake pedal.
Car hit metal post and tree knocking them down and dragging the tree 50 to 60 feet before stopping with my foot still on the break. Car had stopped accelerating. I turned off the ignition. This unintended acceleration had happened before. Two different dealers attempted to fix the problem.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Vehicle speed control. Accelerator pedal, cruise control, throttle codes.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.