How to find the best gas credit card? There are several factors you have to take into consideration when searching for the best gas credit cards. Are you planning to use your credit card exclusively for gas purchases or do you want to use it more generally? Some gas credit cards can only be used for gas purchase. Are you buying gas from the same gas company or are you using a variety of brands? Some gas credit cards can only be used when purchasing gas from the same gas company. Another important aspect is the APR and the credit card fees. So make sure you pay attention to them. Also note that gas credit cards usually charge higher interest rates than regular credit cards. Take your time and compare many cards and you will surely find the best gas credit card for you.