Tesla Model X Model X deliveries had gone to US customers. Nevertheless, in January 2016 a Tesla car other than the Model S was registered in Germany and a Tesla Model X was sighted driving there with a license plate from Ingolstadt. Since the Audi headquarters are located in Ingolstadt, this led to speculation that Audi has acquired a Tesla Model X as part of its effort to develop its own battery-electric SUV. Tesla produced 507 Model X in the fourth quarter of 2015, of which 206 were delivered to customers. Model X sales totaled 2,400 units during the first quarter of 2016.
Tesla Model S after its introduction, with the largest share, 57%, in the US. With an estimated 12,700 units delivered during the fourth quarter of 2016, sales totaled about 50,931 units in 2016, making the Model S the world's top selling plug-in car for the second year running. The United States had about 29,156 units delivered, followed by China with 6,334, surpassing Norway as the largest Model S overseas market. , about 158,159 Model S cars have been sold worldwide since its introduction, making the Model S the world's second best-selling plug-in electric car ever after the Nissan Leaf (250,000), and ahead of