There is no single “right” auto-loan APR — the rate you are offered depends on several factors. The biggest is your credit score: borrowers with excellent credit see the lowest rates, and rates climb as scores fall.
Other factors include the loan term (shorter terms usually carry lower rates), whether the car is new or used (used-car loans typically price a bit higher), the size of your down payment, and broader market interest rates. To get the best rate, check your credit before you shop, get pre-approved so you can compare offers, keep the term as short as your budget allows, and put more down. Even a fraction of a percentage point makes a meaningful difference over a multi-year loan.