FaultScore

Worst years for a Mercury Grand Marquis

Owners have filed 4,953 complaints about the Mercury Grand Marquis with NHTSA across model years 1977 to 2011. More of them are about the lights than anything else.

Avoid

2003 Mercury Grand Marquis

449 complaints — the highest FaultScore of any year, mostly lights.

Cleanest on record

2011 Mercury Grand Marquis

11 complaints — the lowest FaultScore of the graded years.

Every Mercury Grand Marquis year, graded

The grade compares each year against the rest of this model's own run — never against another car. Click any bar or row to open that year's report.

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded
Year Grade Complaints Crashes Fires Median miles Most reported
2011 B 11 0 3 83,750 Electrical System
2010 C 35 13 0 50,000 Steering
2009 C 35 3 1 27,000 Brakes
2008 C 101 15 1 56,122 Steering
2007 C 111 8 0 29,430 Tires
2006 C 188 23 3 62,800 Acceleration & Cruise Control
2005 D 634 33 10 70,500 Lights
2004 D 422 22 6 82,000 Lights
2003 D 449 32 2 86,850 Lights
2002 C 101 11 2 50,000 Acceleration & Cruise Control
2001 D 207 34 3 62,000 Engine & Cooling
2000 C 216 21 6 75,000 Engine & Cooling
1999 C 202 21 2 103,000 Engine & Cooling
1998 C 168 9 9 87,000 Engine & Cooling
1997 C 370 12 7 80,900 Engine & Cooling
1996 C 282 10 24 85,609 Engine & Cooling
1995 C 222 25 6 90,000 Brakes
1994 C 197 20 20 98,500 Acceleration & Cruise Control
1993 C 178 11 20 100,000 Transmission & Drivetrain
1992 330 28 33 114,000 Brakes
1991 106 13 15 Electrical System
1990 63 7 6 69,000 Electrical System
1989 69 10 19 86,500 Electrical System
1988 98 10 32 Electrical System
1987 57 2 18 Electrical System
1986 22 0 12 Electrical System
1985 29 0 9 Electrical System
1984 24 2 6 Electrical System
1983 14 0 1 Transmission & Drivetrain
1982 8 0 0 Engine & Cooling
1981 2 0 0 Fuel & Propulsion
1978 1 0 0 Electrical System
1977 1 0 1 Engine & Cooling

What breaks on a Mercury Grand Marquis

Across every model year on file. Follow a row for that part's complaints and the year it was worst.

Lights 950 19.2%

Worst in 2005

Electrical System 556 11.2%

Worst in 2005

Engine & Cooling 535 10.8%

Worst in 1997

Worst in 2005

Brakes 369 7.5%

Worst in 1992

Steering 365 7.4%

Worst in 2004

Airbags 248 5.0%

Worst in 2005

Worst in 1993

Worst in 1997

Suspension 186 3.8%

Worst in 1997

Worst in 1995

Seat Belts 154 3.1%

Worst in 2005

Body & Structure 149 3.0%

Worst in 2007

Tires 116 2.3%

Worst in 2007

Exactly what failed on a Mercury Grand Marquis

The named sub-assemblies behind those complaints, across every model year.

Headlights 150 16.8%
Automatic Transmission 126 14.1%
Manifold/Header/Muffler/Tail Pipe 116 13.0%
Engine 100 11.2%
Switch 80 9.0%
Gasoline 75 8.4%
Antilock/Traction Control/Electronic Limited Slip 69 7.7%
Frontal 69 7.7%
Body 56 6.3%
Front 50 5.6%

Complaints filed over time

Every complaint about every Mercury Grand Marquis, by the month it reached NHTSA.

Jan 1995 peak 75 Jul 2026

Mercury Grand Marquis problems by state

Where owners filed from. Heavier states are usually just bigger markets, but a part that fails in heat or salt shows up here first.

Compare the Mercury Grand Marquis

Side by side on complaint history. Remember that raw totals track how many were sold as much as how good they were.