California legalized the sale of a gasoline blend that supporters champion as a cheaper fuel that could lower gas prices by 20 cents per gallon. But nearly a year later, drivers still can't buy it.

E15 is usually only available part of the year to help ease high gas prices under a waiver from the EPA.

Flex fuel, or E85 gasoline is a good deal cheaper than your regular blend, but can you mix the two together? Here's ...

Every winter, gas pumps quietly change their formula, and almost nobody notices until their fuel gauge starts dropping faster than usual. The idea of "winter blend" gasoline has become one of those ...