Options trading activity on auto finance ETFs reflects market bets on continued firm used car finance prices into mid- Consumer Reports offers expert advice and exclusive data that empowers you to shop smarter and choose a car that fits your needs and budget. Of course, a better credit score will help you secure a better interest rate on your used car loan. Experian reports that buyers with “super prime” credit (typically a score of 720 or above) can finance a used car at a rate of 6.82%. That’s barely more than the average interest rate for a new car loan. Recent quarterly filings show growth in interest income among banks with large auto finance divisions, buoyed by firm used car finance prices. Analysts predict net income boosts if delinquency rates remain stable.