Now that the calendar has turned to 2026, most gas stations in Iowa are required to advertise and sell E15 gasoline. The requirement was included the state’s E15 Access Standard, which was adopted by the state legislature in 2022.
Gas stations and convenience stores that were operating when the law was passed are required to offer E15 from at least one dispenser, unless they qualify for one of three waivers. Locations built after January 1, 2023, must offer E15 from at least 50% of their fueling positions.
E15 is gasoline blended with between 10.5% and 15% ethanol. Most gasoline available at U.S. pumps today is E10, or gasoline blended with up to 10% ethanol. E15 is approved for use in all vehicles of model year 2001 and newer, as well as flexible-fuel vehicles, by the Environmental Protection Agency (EPA).
