My GT just clicked over 210k today! I still feel the car is very relaible and has a lot of miles left. I wouldn't hesitate to drive anywhere in the country now, pending the blizzard warning has been lifted and the snow more or less plowed. haha
As with any car, maintenance is the key. If the car hasn't been taken care of, it isn't going to last. This means regular oil changes, trans fluid changes (auto), plugs, filters, ect. Obviously, you don't want to buy a car that hasn't had repairs made. If you find a bunch of accessories aren't working, then it may not be worth keeping up the car. Does it have working AC? Windows, lighters, pulls, doors, pockets and all the other little stuff is working? It's just not worth it to drive or repair a car that hasn't been fixed. That's a sign they just wanted to keep it barely running instead of lasting for a long time.