[richardew]

The interest paid through the loan is $3,914.49
The monthly payment would be $568.93.
I got the same results as the website gives you.
You can calculate the monthly payment on a balloon loan yourself. It is exactly like a lease. Your monthly payment has 2 parts to it.
1. The amount of the car that you use up. This is the cost of the car less the residual. If you plug this amount into the loan calculator as the amount you borrow and use 5 years and 4.9% that will be the first component of the monthly payment.
2. The interest on the balloon amount. In the case of your loan, the monthly interest is 4.9%/12 (0.4083%). The interest on the balloon amount is
(0.4083%) x (balloon amount).

What are the terms of the balloon loan? (interest rate, term of loan, balloon amount, monthly payment)