How APR Affects Your Loan Payment – Real Numbers

Published June 2026 · 4 min read

A USD 20,000 auto loan at 5% APR for 60 months: USD 377/month, total interest USD 2,645. The same loan at 8% APR: USD 406/month, total interest USD 4,332. That 3% APR difference costs you USD 1,687 more over the life of the loan — from interest alone. APR is the single most important number on any loan offer.

Before signing any loan, run the numbers through our APR Calculator to see your exact monthly payment and total interest cost.