“Typically this is a poor idea, but there are certain scenarios where paying off a car loan with a credit card may benefit you financially. Some credit cards offer promotional or introductory periods that provide zero percent APR for nine, 12, or 15 months. So if you have a car loan with a higher interest rate than zero (which is likely), a credit card may save you money.
Keep in mind that a majority of lenders won’t take credit cards for car loan payments. Furthermore, you should make sure you can still pay the monthly amount on your credit card, as most of these promotional interest rates will revert to a rate that’s much higher (usually 20% or more) if you miss a payment. “