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Mercury Grand Marquis repairs by problem area

Engine (31%)

Transmission and Drivetrain (13%)

Brakes and Traction Control (7%)

Suspension and Steering (19%)

Electrical and Air Conditioning (25%)

Paint, Rust, Leaks, Rattles, and Trim (1%)

Other (4%)

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Chart based on 122 repairs.

Mercury Grand Marquis transmission repair cost distribution

$2500+ (5%)

$1000 - $2499 (5%)

$500 - $999 (27%)

$100 - $499 (36%)

< $100 (27%)

Chart based on 22 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2009 Mercury Grand Marquis 4dr Sedan

224-horsepower 4.6L V8 4-speed automatic RWD

29871 mi Rear axle seal leaking 

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2005 Mercury Grand Marquis 4dr Sedan

224-horsepower 4.6L V8 4-speed automatic RWD

225000 mi

US $1800
Transmission rebuilt 

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2004 Mercury Grand Marquis 4dr Sedan

239-horsepower 4.6L V8 4-speed automatic RWD

97000 mi

US $2300
transmission failure - had a rebuilt tranny installed 

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2004 Mercury Grand Marquis 4dr Sedan

224-horsepower 4.6L V8 4-speed automatic RWD

276000 mi Transmission locked up at high speed and coused the engine to throw a rod through the block. 

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2003 Mercury Grand Marquis 4dr Sedan

224-horsepower 4.6L V8 4-speed automatic RWD

88000 mi

US $400
differential failure ... rear axel etc ... 
126300 mi

US $850
rear axle had become egg shaped and was wearing through 
33300 mi

US $640
Axle needed to be replaced. The 2003 model year cars made prior to 1/1/2013 had faulty "soft" axles. This is a known issue you can search on Google. Horrible job by Ford to not issue a recall for this. 
90300 mi

US $750
Rear differential housing sprung a leak and took rear end bearings with it. Replace and repacked bearings. 

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2002 Mercury Grand Marquis 4dr Sedan

220-horsepower 4.6L V8 4-speed automatic RWD

101000 mi

US $910
Steering idler arm, pitman arm and drag link replacement (significant amount of play and clunk at steering wheel). Rear diff cover leak, reseal diff cover. Transmission slips between 3-4 gear change, dropped pan to replace filter.  

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2001 Mercury Grand Marquis 4dr Sedan

235-horsepower 4.6L V8 4-speed automatic RWD

130000 mi

US $400
U joints replaced 

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2000 Mercury Grand Marquis 4dr Sedan

215-horsepower 4.6L V8 4-speed automatic RWD

168000 mi

US $450
The shift indicator cable broke. When shifting into Park, it suddenly was reading Rark. And Neverse, Deutral and 2rive. After a week, the cable fully broke so it showed "1" all the time. I know my car is #1 all the time! 
63000 mi

US $550
Tailshaft trans bushing replaced. 

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2000 Mercury Grand Marquis 4dr Sedan

200-horsepower 4.6L V8 4-speed automatic RWD

143000 mi

US $2175
Transmission rebuilt due to loss of second gear. 

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1999 Mercury Grand Marquis

Engine not specified

64000 mi Had the drivetrain vibration very common to these cars. Numerous attempts to find solution, but no one knows what it is. That's the reason I traded it. Other than that, it was a great car. 

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Mercury Grand Marquis Transmission Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently Mercury Grand Marquis problems occur, check out our car reliability stats.