To be pedantic, EV do use gears. Most of them have differentials and some gears with a fixed ratio. What most don't have is gearboxes to change the ratio. The

To be pedantic, EV do use gears. Most of them have differentials and some gears with a fixed ratio. What most don't have is gearboxes to change the ratio. The exception is the Porsche Taycan with 2 gears in gearboxes, the second gear slightly improves the acceleration at high speeds and improves the efficiency at high speeds. Accelerating super fast when you are already above the speed limit is not very useful for most people so most electric cars have no gearboxes, despite the slightly better efficiency. It's too complex and expensive. An electric engine has a lot of torque, you need a really good and expensive gearbox to handle it. It makes sense on a Porsche, but not on a Zoé. Tesla has another alternative on the cars with two motors. They don't have the same gear ratios. The rear motor is used more at low speeds and the front one is used more at high speeds. It's a bit less fast than the Porsche solution but much simpler and cheaper. In both cases, having different gears indeed improve the efficiency. I think the Tesla solution is very clever but requires two motors, so it's not perfect either. Most eletric cars have a single motor.