 In July 2018, Tesla Inc. was the first plug-in manufacturer to pass 200,000 sales and the full tax credit will be available until the end 2018, with the phase out beginning in January 2019.General Motors combined sales of plug-in electric vehicles passed 200,000 units in November 2018.The full tax credit will be available until the end of March 2019 and thereafter reduces gradually until it is completely phase out beginning on April 1, 2020.