An alternative if you can't get this financing is Think Bank. Rates are also on par. I did their 60mo. 4.09% with credit score of 700 and 10% down.
24 Months
3.79% APR
36 Months
3.89% APR
48 Months
3.99% APR
60 Months
4.09% APR
https://www.thinkbank.com/rates/loan_rates.html