High Quality Content by WIKIPEDIA articles! The United States became the world`s largest producer of ethanol fuel in 2005. The U.S. produced 13.2 billion U.S. liquid gallons (49.2 billion liters) of ethanol fuel in 2010, and together with Brazil, accounted for 88% of that year`s global production. In the U.S, ethanol fuel is mainly used as an oxygenate in gasoline in the form of low-level blends up to 10 percent, and to an increasing extent, as E85 fuel for flex-fuel vehicles. In 2009, 99% was consumed in gasohol. Most is produced using corn as feedstock.