Monthly Loan Calc Auto loan payment calculator Loan amount($) (required) After negotiations Trade In($) (optional) Down Payment($) (optional) Fixd tecomments putting at least 20% down, in any combination of trade-in and cash. APR (%) Use the guide at right if you want to estimate. What's your credit score? Super Prime (781-850) Prime (661-780) Nonprime (601-660) Subprime (501-600) Deep Prime (300-500) Based on your score, the average rate is 2.47% (new) or 3.61% (used). Months Suggested max: 36 months for used cars, 60 for new. Source for credit range information: State of the Automotive Finance Market, Experian Information Solutions P2135 – Meaning, Causes, Symptoms, & Fixes FIXD Emissions Precheck: What to Know and How to Use It Chrysler P0171 – Meaning, Causes, Symptoms, & Fixes