"I got mine from my grandfather (I guess only old folks with money drive these). It was great....for about 20 miles. So far the work I have had to do on it (and every other grand marquis my mechanic friends tell me about) verbatim is as follows.
Keep in mind I do my own work, the prices don't reflect a mechanic doing the work for you. So tack on another few hundred on each repair.
-Ford designed a junk intake manifold crossover. Plastic! it cracked, spilled antifreeze everywhere and the engine overheated. Replacement cost $200
-Universal joints went bad at 75,000. Both front and back. Replacement cost $100
-The complete "geniuses" (sarcasm) at Ford thought they should put 'lubed for life' non greasable ball joints on the suspension parts. Mine failed at 77,000 going down the express way. Luckily the car didnt flip and kill everyone inside. You WILL NEED to replace the upper and lower ball joints in this vehicle. Replacement cost $500 (had to get lower control arms too cause they drug the pavement when the ball joint failed)
-The tie rod ends, both inner and outer went bad. No grease fittings. Replacement cost $250
-The stabilizer bar link went bad. Again no grease fittings. Thanks Ford. Replacement cost $100
-Brakes went bad at only 50,000 miles. Drive it 3 miles a day. Replacement cost $50
-Wheel hub and bearings went bad at 70,000 miles. Replacement cost $150 for each side!
Not to mention various coolant leaks, hose leaks, alignment issues, excessive tire wear and the like. These are all COMMON issues with every one of these cars.
Cons: "resale and do not like rear air suspension."
Likely to recommend this car? (1-10): 10
"at 20 yrs old with 165,000 miles only maint except normal items such as tires and brakes have been window motors at 150k. still has original starter, alt., water pump and fuel pump! ac still works as does radio. resale is not the best."
"I've always like larger cars. My grand Marque has a very stable ride and good road feel. It has always been very reliable and has never broke down and left me stranded. I drive from Hesperia CA. to Phoenix every other month or so, averaging 6 or 7 times a year. My Grand Marque is very comfortable and is a joy to drive that distance. I've made that trip in other car and feel "almost" beat up by the time I arrive. But in my Grand Marque, I arrive feeling just fine and ready to play with my grand kids. I do have a small oil leak but it is so small I am not worried about fixing it yet. Over all, I could be happier with this car."
"Very solidly built car; excellent visibility (much more so than on many newer cars); very smooth ride. Easy for older people to get in and out of. Steering and brakes seem "loose" by more current standards. Finish has held up so much better than on the other two GM cars (Malibu, Impala) we've owned more recently."