U.S. plug-in vehicles, which include all-electric and plug-in hybrid electric vehicles, have been saving increasing amounts of gasoline.
In 2018, plug-in vehicles on the road displaced 323 million gallons of gasoline or about one quarter of a percent of all gasoline used in the United States, according to the US Department of Energy data.
Gasoline displacement from plug-in vehicles is about 42% more than it was in 2017 and about twice as much as it was in 2016.
The gasoline displacement from EV versus PHEV was split almost evenly in 2012 and 2013 but EV accounted for two-thirds of the gasoline displacement by 2018.[Source: Argonne National Laboratory, Assessment of Light-Duty Plug-In Electric Vehicles in the United States, 2010–2018, ANL/ESD-19/2, March 2019]