Did you thought about a credit as financiation for the car?
as far as i know a credit is cheaper than leasing if you buy the car for private purposes. i m not firm with the american law, therefor be careful with my advice. but here in germany its better to take out a personal loan than leasing ( you have to check some banks for a good interestrate).
if you have colaterals it gets a bit cheaper again.
buying a car cash should reduce the price ( 5-10% ?) cause the dealer normaly prefer cash ( improving their liquidity and so on).
get as many information as possible befor you act. Asking is free of costs in the most cases, but it reduces your cost signifianct with some luck.