Most gasoline sold across the U.S. is blended with 10% ethanol, but 15% blends are becoming increasingly common.

This type of gasoline is typically restricted in the summer due to concerns about smog — which can form more easily from ...

An Emergency Waiver from the EPA may alleviate some of the pain at the gas pump for drivers, but only if your car can use a ...

The Trump administration announced it is allowing nationwide sales of higher-ethanol E15 gasoline this summer, a move it said would would keep gasoline prices low and support US agriculture.

But what gives it that 87 rating is a word you've probably heard a time or two: Ethanol. Regular 87 octane gasoline in the U.S. contains about 10% of it. This renewable biofuel (made mainly from ...

The Trump administration said it will lift seasonal restrictions on higher ethanol fuel through an emergency waiver starting ...

The Trump administration on Monday issued an emergency waiver to allow the sale of a higher-ethanol gasoline blend to be sold this summer nationwide, saying it will add to fuel supply during the peak ...