BYD Auto is an automobile company.
BYD Auto Co. , Ltd. is a Chinese automobile manufacturer based in Xi'an , Shaanxi Province , and a wholly owned subsidiary of BYD Company . In 2015 , BYD Auto was the best selling global electric vehicle brand , ahead of General Motors and Nissan . For a second year running , BYD was the world 's top selling plug-in electric car manufacturer with over 100,000 units delivered in 2016 , followed by Tesla , Inc. . In October 2016 , BYD Auto became the all-time second largest global plug-in car manufacturer after the Renault-Nissan Alliance .