Yea, that is why I was wanting to shop dealerships. I think I would rather pay a little bit more and buy local, but $30 or $40 a month more over 5 years, I might want to go a little farther away from home to buy.
That's easy to solve, ask them for the full amortization payout amount at each dealer. Then you know without a doubt who has the best deal (assuming your are putting the same amount down).
Most drug store sell little calcs for $10 that will figure this for ya within a few bucks one way or the other.