Just out of curiosity, have looked into whatever terms you can get on a new car? I went through a mess of used cars for about twenty years, and spent a small fortune on them. In 1998 we bought a new Ford, in 2005 we traded it in on another new Ford. Since 1998 we have not paid for anything but routine maintenance, the peace of mind is worth some money. If you buy a lower end vehicle you can (with decent credit) get a good care for under $200 a month.
Its worth at least calculating the cost. Remember the cost of a car is not what you pay for it when you buy it. It's that, plus gas, insurance, licenses and repairs for the life of the car. If you're comparing a used car that will last five years against a new car that will last ten, remember that you're going to have to buy another one half way through the ten year span.