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
Tesla Model S units in 2013, placing the Model S as the third selling plug-in electric car after the Chevrolet Volt (23,094) and the Nissan Leaf (22,610). Also in 2013, the Model S was the top seller in the full-size luxury sedan category, ahead of the Mercedes-Benz S-Class at 13,303. In 2014, 16,689 Model S sedans were delivered, down 10.5% from 2013, but the electric sedan ranked again as the third best selling plug-in car in the U.S. In 2015 the Model S ranked as the top selling plug-in electric car in the U.S, with 25,202 delivered, surpassing both the Leaf (17,296) and