The interest rate you get with your auto loan depends on a few things. Your credit score, where you live, and the length of your loan all play a role in determining your interest rate. Of these, your credit score is the biggest factor. The difference between good credit and bad credit can mean thousands of dollars. Here is a look at the range of interest rates for auto loans. Assuming you take out a 48 month auto loan, you can expect an interest rate of between 4.9% and 18.7%. This is based off of national averages. People with a FICO score of about 720 can expect the 4.9% rate. If your credit score is between 690 and 720, your interest rate will be around 6.4%. If your credit score is in the middle of the 600's, you start to see higher interest rates. A credit score of 620 will give you a