Source: Chris Fichera, Consumer Reports

With the nationwide average price for a gallon of regular gas costing nearly $4, the pain of filling up your gas tank might be alleviated a little by using a credit card that pays you something back each time you visit the pump. But choosing a gas-company card could have downsides. For example, credit cards from Citgo, Phillips 66/Conoco, and Shell carry interest rates of 25 percent, which would wipe out any rewards you earned if you don't fully pay off your tab at the end of the monthly billing cycle.

Read Full Article: Can gas-credit-card rewards ease your pain at the pump?