If you realize this you can just make a choice of shelling out 45K in one shot or taking 0% financing over 5 years. In my case I'd rather keep that money in an investment that i'm making 5% on, and shell out 6-700 a month. Not only does it stretch out payments for 5 years but it allows be to keep that cash for other unexpected expenses. I guess if I had an extra 100k hanging around I might be more comfortable making that big cash payout and save some money. But you are correct, the manufacturers can entice folks who are unaware with the financing deal. I'll still try to talk them out of some $$$ before making the deal.