Key takeaways New car loans had an average interest rate under 7%, while used car loan rates averaged nearly just under 11.50% in the third quarter of 2025. Your credit score plays a significant role in determining your interest rate, but other factors such as the lender, amount borrowed, length of the loan and economic conditions also play a role. The best way to secure a competitive interest rate on your auto loan is to shop around and work to improve your credit score. The average auto loan int ...