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Hybrid electric vehicle (HEV), plug-in hybrid electric vehicle (PHEV), and all-electric vehicle (EV) production increased in 2021, while gasoline vehicle production declined. The first HEVs entered the United States market in model year (MY) 2000 while the first mass-produced PHEVs and EVs arrived in MY 2011. There has been a noticeable increase in production of advanced technology vehicles in recent years. In 2021, the production share of advanced technology vehicles nearly doubled from the previous year, led by HEVs which accounted for 8.9% of all vehicles produced.

Light-Duty Vehicle Production by Technology, MY 200 -2021

Note: HEV = Hybrid electric vehicle, PHEV = Plug-in hybrid electric vehicle, and EV = All-electric vehicle. Fuel cell vehicles are not included because production volumes are too small to be visible on this graph.

Source: U.S. Environmental Protection Agency, 2021 EPA Automotive Trends Report, EPA-420-R-21-023, November 2021.