Donut Lab, a subsidiary of Finland-based Verge Motorcycles, has developed a motor with the highest power density in the world.
During CES 2025, Donut Lab unveiled its innovative donut-shaped motors that can be integrated with a vehicle’s wheels and tires. While adding unsprung mass can pose challenges for ride and handling tuning, Donut Lab’s lightweight motors help minimize this issue.
The company is introducing a range of five motors for various designs, including a 21-inch automotive version generating 844 hp and 3,171 pound-feet. Despite weighing 88 pounds, which adds to unsprung mass, Donut Lab also offers a 21-inch motor for semi trucks producing 268 hp and 2,212 lb-ft.
Donut Lab electric motors
For smaller applications, Donut Lab offers a 17-inch motorcycle motor weighing 46 pounds with a power output of 201 hp and 885 lb-ft. Additionally, there is a 12-inch scooter motor weighing 17 pounds producing 20 hp and 221 lb-ft. The company also has a 4.7-inch drone motor delivering 4 hp and 14 lb-ft.
By maximizing power output in a compact size, Donut Lab aims to reduce the manufacturing cost of electric vehicles by using fewer materials. The motors are part of a comprehensive platform that includes battery packs, control units, and software, although the efficiency of these motors has not been confirmed.
In-wheel motors are not a new concept, with Porsche and Ferrari exploring this technology in the past. Despite some challenges faced by startups in commercializing in-wheel motors, Donut Lab’s approach shows promise in enhancing efficiency in electric vehicles.
Donut Lab electric motors
While in-wheel motors have faced varying degrees of success, Donut Lab’s innovative approach could pave the way for more efficient electric vehicle designs. The company’s focus on power density and lightweight design sets it apart in the rapidly evolving electric vehicle market.