That looks like 5.52% APR, not bad for sure.  I did get a little better deal (ABOUT 2.67 APR) but it was a rare deal the more I look around.  Here is mine:
Car price                 42,495
Residual/buyout     24,520  57%
36 months @              485
(12,000 miles/year)
Cash down                4,000
Total Payments       17,460
w/buyout                45,980 (if paid in full by end of year 3)