Is it smart to pay off a car with a credit card that has lower interest rate?

In most car loans, a fixed rate and monthly payment will apply. You may have a credit card with a lower rate but if you make only the minimum monthly payment, you will most likely be in debt longer so the lower rate won't help you. It also depends on if your credit card interest is calculated on a daily average balance or compounded. Make extra payments to your car loan to pay less interest. [A average creditcard balance of $11,000.00 at 19.99% with a $100.00 monthly payment can keep you in debt for 29 years].