The number of transmission speeds (gears) in new light vehicles has been growing over the last few decades. By 2016, more than half of all cars and light trucks were 6-speed, according to data gathered by Oak Ridge National Laboratory (ORNL). The sales share of 7–10-speed transmissions grew to 18% of cars and 22% of light trucks.
Continuously variable transmissions (CVTs) were more than one-quarter of the car market and 13.3% of the light truck market.
Oak Ridge National Laboratory, 2016 Vehicle Technologies Market Report, May 2017