Let the buyer beware, cheap cars are cheap for a reason. Small dealers generally buy cars at auction or a wholesaler. These are often problem cars that the dealers slap a band aid on the problem, wash and detail the car and put it on the lot. The large dealerships generally deal in trade ins and lease returns that are also a roll of the dice but to a lesser extent and some dealerships will offer a three day no questions asked return. The large dealership also knows that if they treat you right with a used car you're more likely to buy from them if you buy brand new. Cheap cars are buying someone else's problems and unless you're a mechanic I'd avoid them.