Gas Credit Cards The rewards credit cards give you a certain number of points for every penny you spend on gas. Those points give you cashback rebates. They are more like cashback credit cards that reward you for the amount you spend on gas. Some gas credit cards also offer you reward points for other purchases at places like gas stations and drug stores. Gas credit cards basically offer cashback rewards for more than just gas purchases, but the points may be very minimal when you use them for other payments.