New EV motor packs 1,000 hp per wheel, sets unofficial power-density record

Oxfordshire-based electric motor manufacturer YASA has developed a prototype in-wheel powertrain that delivers over 1,000 horsepower per wheel, setting an unofficial world record for power density. The compact 28-pound motor produces 750 kilowatts (1,005 hp) peak power with a power density of 59 kW/kg, significantly surpassing current industry standards. Paired with a 33-pound dual inverter, the integrated system achieves high efficiency and performance, enabling continuous output suitable for both high-performance and long-duration driving. This in-wheel motor is "mass-neutral," meaning it does not add net weight to the vehicle, and its advanced regenerative braking system could eliminate the need for rear brakes and driveshafts, potentially reducing vehicle weight by up to 1,102 pounds. The innovation promises to reshape EV design by improving performance, efficiency, and packaging flexibility. Compared to existing motors like Koenigsegg’s Dark Matter, YASA’s motor is notably lighter and more powerful per pound.