I have to second with BD! I would not buy a car that is not a brand that is known for going and going and going. Look into a Honda, Toyota, or Volvo. I know each kind of car has its own quirks, but Honda and Toyota are really good at 4 cylinder engines and you can get everything but the digital dash and maybe leather seats. And, you can get a really nice car for $3000.
Do you have to go through a dealer? Dealers have to mark up their cars because they have overhead. Private Party doesn't. And, the dealer doesn't know as much about the car as the person who has driven it for years right? Just ask if there are any quirks or things that are unique about the car....they all have them.
I looked at Edmunds.com and the 1995 Regency you are looking at is worth $1124 as trade in (this is what the dealer gave as credit to the person who brought it in), $1668 as Private Party (what you would pay a person who owns the car like through the classified), and $2576 at a dealer (they clean it up and make it look pretty and smell good. Very rarely do they actually do any mechanical work).
So, in my opinion I would rather keep the difference between $1668 and 2576 which is $908 to my self. If you want to get a car detailed, I would spend the $50 or $100 and still be ahead!
If you don't have to go with a dealer, then look at Craigslist, I have gotten my last 5 cars from there with no regrets!
Saabs are great cars also as long as you buy one that is made NOT in the US by Chevy or GM. Look for a 900 or a 9000 and you will have a car that will go forever! Timing chain instead of belt so doesn't break or need to be changed.
Volvos are good also and it doesn't have to be a diesel....
Honda and Toyota great cars especially for the money, but stick to 4 cylinders so they will get great gas mileage.
Many people think that an engine is starting to get broken in at 100,000 miles, but really that is when everything starts breaking and needing repair which is why people who buy new cars trade them in right before they get there. I would look for a car that is either at 80,000 and below, or 120, 000 and above. Usually that means that the wear and repairs that happen at 100,000 have already happened.
So, to answer your question, NO, I would not buy the car. I would not buy something American made. I also would buy something that has that many miles and has not gone past the expensive repair point.
I hope that helps. Good luck! Really, be brave and go private party!