BOSTON (TheStreet) -- The average U.S. household spends some $3,000 a year on gasoline, but you can save roughly the equivalent of one month's fuel bill by simply paying with one of the five credit cards below.
"You can cut 6% or 7% on your gas bill by [using the best cards]. That's almost like getting a month of gasoline for free," saysOdysseas Papadimitriou of credit-card rater CardHub, which recently named 2014's Best Gas Credit Cards.
CardHub compared terms on more than 1,000 credit cards to see which offered the best "cash-back" rewards for gas purchases.
The best accounts pay out as much as 50 cents per gallon for certain fuel purchases -- way more than the 1% cash back you often get with run-of-the-mill credit cards.
But Papadimitriou says consumers should consider their individual buying habits before deciding which card to get.
For instance, he says people who generally buy gas at the same station might do well with a card that's tied to specific chain, as those accounts frequently offer particularly generous rebates, while consumers who fill up at the closest station whenever they need gas could do better with "generic" cards offering decent cash back no matter where they go.
"If you're not consistent about which gas station you go to, don't count on changing your habits," Papadimitriou says.