In the debate between buying new vs. used, the sales tax should be considered. What is the rationale for a sales tax to be levied on a used car purchase? None. The car has already paid a sales tax when sold new. In fairness, it should never be taxed again. A car that changes hands enough times in its life could theoretically pay more in sales tax to the state than its value when new. This undue revenue to the state is paid by the consumers, especially poorer consumers who tend to buy used.
The only way to beat it is to buy new and then keep the vehicle till its value is nil.