MTBE was once commonly used as a motor gasoline additive in the United States but was phased out in the late 2000s as a result of water contamination concerns. Since then, fuel ethanol has replaced MTBE as a gasoline additive.
In contrast to MTBE, the use of fuel ethanol has been supported by tax subsidies such as the Volumetric Ethanol Excise Tax Credit and by the Renewable Fuel Standard, which mandates the use of biofuels in the US transportation fuel supply. (Source: US Energy Information Administration, PR, 13 July, 2018) Contact: US EIA, www.eia.gov
More Low-Carbon Energy News US EIA, Ethanol, MTBE,