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Mercury Grand Marquis Problems

The Mercury Grand Marquis was a full-size sedan produced from 1983 to 2011, beloved by police departments and traditional American car buyers alike. With nearly 10,000 complaints and 34 reported deaths, this body-on-frame sedan has a long ownership history to learn from. The Grand Marquis offered exceptional comfort, V8 power, and straightforward mechanical systems that many owners appreciated. It remains a popular choice for those seeking affordable, roomy transportation.

9,898
Total Complaints
25
Total Recalls
33
Model Years
34
Reported Deaths
!

Years to Avoid

These years have significantly more complaints than average.

2005 2004 2003
✓

Best Years

These years have the fewest reported problems.

1977 1978 1981

Common Problem Categories

Exterior Lighting 1,864
Electrical System 1,112
Engine And Engine Cooling 934
Vehicle Speed Control 918
Steering 726

Complaints by Model Year

All Model Years

Year ↓ Complaints Recalls Crashes Fires Rating
2011 20 2 0 6 Good
2010 70 2 26 0 Good
2009 70 2 6 2 Good
2008 202 2 30 2 Average
2007 222 2 16 0 Average
2006 374 2 46 6 Average
2005 1,266 3 66 20 Avoid
2004 844 1 44 12 Avoid
2003 896 1 64 4 Avoid
2002 202 1 22 4 Average
2001 414 1 68 6 Average
2000 432 1 42 12 Average
1999 404 1 42 4 Average
1998 336 1 18 18 Average
1997 740 1 24 14 Below Average
1996 564 1 20 48 Below Average
1995 444 1 50 12 Average
1994 394 0 40 40 Average
1993 356 0 22 40 Average
1992 660 0 56 66 Below Average
1991 212 0 26 30 Average
1990 126 0 14 12 Good
1989 138 0 20 38 Good
1988 196 0 20 64 Average
1987 114 0 4 36 Good
1986 44 0 0 24 Good
1985 58 0 0 18 Good
1984 48 0 4 12 Good
1983 28 0 0 2 Good
1982 16 0 0 0 Good
1981 4 0 0 0 Good
1978 2 0 0 0 Good
1977 2 0 0 2 Good

Mercury Grand Marquis Years to Avoid

The 2005 Mercury Grand Marquis is the worst year to avoid, with elevated complaint volumes compared to other years. Common issues across problematic years include intake manifold coolant crossover failures on the 4.6L V8, causing coolant leaks. Air suspension problems, particularly in models equipped with this option, led to expensive compressor and air spring replacements. The 2003-2006 models experienced more complaints about spark plug ejection from cylinder heads, a known problem with Ford's modular V8 engines. Transmission cooler line failures also affected certain model years.

Best Mercury Grand Marquis Years

The 1978 model year and earlier Grand Marquis models offer classic American luxury with simpler mechanical systems. For modern comfort with proven reliability, the 2007-2011 models benefit from years of refinement to the Panther platform. These final years addressed the intake manifold issues and improved overall build quality. The 2009-2011 models are particularly recommended for buyers wanting the newest examples.

Frequently Asked Questions