Ill try and give you some advise on buying a used car.
Skip the dealers and look for private sales.
Shop in well to do neighborhoods
look for well maintained yards, and homes
these people have the money to maintain their cars
this is where you will get the best car for the money
tell the guy he has a great home, that he must have done well for himself
stroke his ego !
If you must go to a dealer, look for the poorest looking salesman
ask him to show you the cars that have sat on the lot the longest
these are cars the manager will want to get rid of the most, the dealer is paying interest on them by the month
start the car cold, listen for any noises, shop around the end of the month, they want the stuff off the books
look for the ugliest car, something no human would get caught driving, that's your best deal.
this works with women too!