Here are rates from Eloan.com
New Vehicle6.09%6.35%6.99%Used Vehicle (Dealer)6.55%6.95%7.59%Private Party Vehicle8.95%9.25%10.05%

It appears they are about 2.5% higher than buying from a dealer. Try different ones, but credit unions usually have better rates. Mine had a deal where they will beat your current deal by 1%, so I got the dealer to get me the best rate then refi with my credit union 30 days later for 60mos at 5.75%.
You have to also take into consideration that if you could find one that's at a dealer that has already had the trans oil leak fixed, headlamps replaced, fuel pump replaced, intercooler replaced, and a few other things the inventory reduction cars had wrong with them, you still would have to pay $3000 in sales taxes. So it's a wash. Choose the best one, and if you do keep it the life of the loan then you'll break even. If you don't then paying the taxes from a dealer will be a loss. The warranty is priceless either way and expensive if you don't get it with the car or Tod64k.
Cruzinquick