Tesla Model X According to Tesla Motors, deliveries were lower than expected because production was impacted by severe Model X supplier parts shortages in the first two months of 2016, and because Tesla had been too ambitious in wanting advanced features (committed "hubris"). The first Model X that didn't need corrections was made in April 2016. Sales during the second quarter of 2016 totaled 4,638 units. Although production was up 20% from the previous quarter, the number of vehicles in transit at the end of June 2016 was much higher than expected (5,150 including Model S cars), representing 35.8% of the number of
Plug-in electric vehicles in the United States 94% of the plug-in sales. In 2014 the Leaf took the lead, with 30,200 units sold, with the Volt ranking second with 18,805, followed by the Model S with 16,689 units. The Tesla Model S, with 25,202 units delivered, was the top selling plug-in car in 2015, followed by the Nissan Leaf with 17,269 units, the Volt with 15,393, and the BMW i3 with 11,024. For a second year on a row, the Model S was the top selling plug-in car with about 29,156 units sold in 2016, followed by the Volt with 24,739, Model X with about 18,028, Ford