I used your example, which you called simple interest and arrived at the same $490.97 payment you did....so its your example not mine. I used the same figures you proposed in your example ($25,000 @6.9% for 6 years) to figure the actual payment $425.02. Prove that wrong! Using you payment of 490.97 for 72 months results in an overpayment in interest of $65.95 per month for 72 months, or $4,748.40......I would never buy a car from you if you think that is fair!
go back and read what i have already said, "i made a mistake" jezzzzzzzzzzz