I looked at this car for three years before I bought one in 1991. I had owned a Colt. I have had the transmission rebuilt at about 170,000 miles, and the vehicle will turn 290,000 miles next week. My only other costs have been routine. The radio and tape player still work. The air conditioner is still great with regular maintenance. I may drive to the dealership when I hit 300,000 just to treat the salesman.
A solid, well built car which is comfortable. The LS with automatic transmission is has terrible acceleration. For reasons only known to Mitsubishi they have an overdrive switch and a power/economy switch. Possibly the overdrive is good on freeway driving but mileage is below 18 mpg in town whatever mode used. Do not buy an automatic! Otherwise car is good at handling, easy to drive, lot of room and comportable. Why they bother with fuel injection I do not know.
Bought my 1991 Mitsubishi Galant from a one-owner lady with 163,000 miles on it, in 2/2002. It came with a shoe-box full of every receipt ever written on maintenance came with the car. We've driven it another 48,000 miles in three years. It is a super car. We have been coast-to-coast several times. It handles Montana winters like it's still in Florida. It gives me 30/33 mpg, and cruises at 80 MPH. After 211,000 miles, it uses a quart of oil every 1,500 miles, Mobil 1. I may keep it forever.
My Galant is still running with 160000 miles on it. In 13 years, besides regular maintenance, I have spent around $2000 in repair cost. Excellent vehicle. I said I would purchase another Galant once this one dies, but it's still running!