But as new car prices go up, so do those of used cars. Even if you can get a clean used car for $20K, that is still a lot of money for a car with little or no warranty left on it. Which means you have to do some common sense checks before you pay for it. Im not asking you to play at being a mechanic I certainly am not but I do suggest you have a mechanic check it out as a last step. Here are the four main checks I do before buying a used car. You can get a comprehensive report on the history...