The main reason why internal combustion engine powered cars need gears is because the engines only generate sufficient torque (turning force) at fairly high rpm. Therefore to move off from a standstill you need the gearbox to adapt the high speed rotation of the engine to the stationary driving wheel. read more
Take into account most production electric cars are governed at around 100 mph, it's easy to see why a single gear is more than enough. It's worth noting exceptions do exist. The original Tesla Roadster began life with a 2-speed transmission, but the company eventually did replace it with a single-speed unit. read more
As electric cars continue to grow in market share, the age of 1 In the age of 10-speed gearboxes, it can be a little hard to imagine a car with only one gear. As electric cars continue to grow in market share, the age of 1-speed gearboxes may just be getting started. read more