In 2021, 73% of all plug-in vehicles on the road were assembled in North America, with 65% of them built in the United States. Japan was a distant second at 12%, followed by Germany at 6%. Since 2011—the first full year of mass market plug-in vehicle sales in the U.S.— a greater share of plug-in vehicles has been assembled domestically than conventional internal combustion-powered vehicles.
Source: David Gohlke, Yan Zhou, Xinyi Wu, and Calista Courtney, Argonne National Laboratory, Assessment of Light-Duty Plug-in Electric Vehicles in the United States, 2010–2021, ANL-22/71, 2022.