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 Fusion Energi with 15,938, and the Nissan Leaf with 14,006. The top five best-selling models in the U.S. accounted for about 65% of total plug-in cars in 2016. Sales in 2017 were led by the Tesla Model S with about 26,500 units, the top selling plug-in car for the third year running, followed by the Chevrolet Bolt (23,297), Tesla Model X (~21,700), Toyota Prius Prime (20,936), and the Chevrolet Volt (20,349), together accounting for 58% of total sales in 2017. During 2011, all-electric cars (10,064 units) oversold plug-in hybrids (7,671 units), but increased Volt sales, together with the introduction of