A car loan payment depends on more than the sticker price. Sales tax adds to what you finance, while a down payment and trade-in reduce it — so the amount you actually borrow can differ a lot from the price on the window.
What you finance
The loan is the vehicle price plus sales tax, minus your down payment and any trade-in value. A bigger down payment or trade-in shrinks the loan and the monthly payment, and reduces the interest you pay overall.
Auto loans are short compared with mortgages — often three to seven years. A longer term lowers the monthly payment but you pay more interest and risk owing more than the car is worth.