Can I get a gas credit card with bad credit? I'm looking for a major credit card for car rental use and for gas but my score is very low. Could you give good advice?

Yes. Even if your credit is bad, you still can find a credit card with the gas rewards program. However, be ready for high interest rate and an annual fee. The interest rates and fees may negate all your rewards if you do not pay them on time. You will want to pay the card balance off to keep your rewards intact. Also, if the card has an annual fee make sure the rewards you earn will at least cover the annual fee. If not, then you may want to skip such card and get a cheaper one. Another option is to apply for a secured credit card. You will need to put down a security deposit to get this card. A minimum security deposit is around $200 and it gets you an equal line of credit. Secured cards work like general credit cards and can be used everywhere they are accepted. Also, Visa cards provide rental car insurance on all of their cards.