Gasoline displacement in the United States due to light-duty plug-in electric vehicles reached an estimated high of 500 million gallons in 2020. All-electric vehicles (EV) displaced a greater portion than plug-in hybrid electric vehicles (PHEV) in 2020, accounting for about three-quarters of the total. Cumulatively from 2011 to 2020, light-duty plug-in electric vehicles have displaced 1.9 billion gallons of gasoline in the U.S.
Source: Argonne National Laboratory, Assessment of Light-Duty Plug-In Electric Vehicles in the United States, 2010 – 2020, June 2021.