Money Can I buy a car with a credit card? You could earn a lot of rewards points, but be careful March 9, 2019Christy Bieber, The Motley FoolComments Off on Can I buy a car with a credit card? You could earn a lot of rewards points, but be careful Whether you can charge your car or not will depend upon the policies of the dealer you buy from. Most dealers cap the amount you can pay on your card.