PenFed offers the PenFed Cash Rewards Visa Signature card, this card offers up to 5% cash back on gas purchases. There are a number of requirements to get that 5% rate (you can read about those in our review here), but 5% cash back on gas is as good as it gets.

PenFed recently introduced a 1.5-2% cash back card on all purchases and with that they removed the ability to apply for the 5% gas card online. MyFICO user happypill was able to apply via phone and was succesfully approved. They also list this as an option here.
If you’re interested in this card, I’d recommend applying sooner rather than later.
