We all know that purchasing a new car is a poor investment. New cars will set you back thousands, and the moment you drive them off the lot, they depreciate by 15-20%. What kind of money should you invest in a used car? To be prudent, you could commit only one tenth of the amount you earn on an annual basis for buying a cheap used car or truck. For the average Georgia resident, who makes $42,178 annually, this comes out to $4,218. Of course, you want to find a car that has been kept up well, and has a good reputation for reliability. Some popular models that you can buy inexpensively include the Acura Integra, Acura Legend, Ford Mustang, Toyota Tacoma, Subaru Legacy, and Ford Crown Victoria.