Car sold

Car sold was a lemon. Owner and mechanic said there was nothing wrong with it, that it was in great shape. Two weeks later, it started overheating. Had to add a gallon of radiator coolant every week. Finally just died, definitely the radiator, but something else is wrong too. The owner said he'd take it back at first, but it was up to the people who bought it to get it back there. Now, he will not take the car back and expects the rest of the money before handing over the title. Normally not a big deal, but when you sell a lemon, it is up to the seller to fix it. So the buyers are paying on a car that they can't drive. NEVER BUY A CAR FROM THESE PEOPLE OR HAVE YOUR CARS WORKED ON THERE. Obviously, the mechanics have no idea what they are doing either. SCAMS