Drive the car, if it runs good buy it, 500$ is cheap for a running/ working car. I have a 95 which is a carry over from 94, they are the same. I got mine for 500$ but it needed work, struts were shot front and rear. mine has 125k and does not burn a drop of oil.
if in your user-info you at least put in what state you live in that will help us to know if you are in a state that uses alot of salt on the road, or if it's a state that might have alot of hot sun, or another location that might cause problems with vehicles after a few years.
the biggest problem I've seen is from rust, make sure the that hand brake works, that the trunk doesn't have holes rusted thru it, that the jack points, and suspension points are all solid, give each corner a push down to see how bad of shape the struts are in, I just replaced some on a friends '95, took about 3 hours, two to do the first side, and an hour to do the 2nd, some penitrating oil sprayed on the day befor would have cut time by an hour.
as long as this car wasn't driven by a teenager enough to totaly kill it, and it's not compleatly rusted out then it should be a reasonably solid car that without trying should give 38-45mpg.