Auto Loan with large Down Payment for Bad Credit?? Good interest rate??

[bryanlamb2007]

I have heard from several people that if you have a large down payment (such as 40% to 50% of the purchase price), you will be able to get a good interest rate from nearly any dealer/lender. Is this true??

I was looking at getting a 2009 Acura TSX, my credit is bad (540, nothing new though), and I have $20,000 cash. No, I'm not going to buy a used one. I want brand new and total price will be about $35,000 including tax, title, license, accessories, and rims. So that would be a $15,000 loan with $20,000 down.

Would I still be subject to high interest rates, or is it true that lenders will give you the preferred rate for such a low LTV on the car??

Thanks!! I hope some auto finance people respond....