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YASA just destroyed its own record for power density with its state-of-the-art axial flux motor

YASA's new axial flux motor delivers 59 kW/kg power density, a 40% increase over its last record, achieving 750 kW peak power in a lighter design.

  • Recently, YASA shattered its prior benchmark three months after the earlier record, hitting a 750 kW short-term peak and 59 kW/kg power density, a 40% increase.
  • Over the summer, YASA refined axial flux designs over 16 years, building on a 550 kW peak, 42 kW/kg trial with a 13.1 kg prototype.
  • Testing a 12.7kg prototype on enhanced equipment, YASA says the motor is running on dynos and has exceeded simulations during dynamometer tests.
  • YASA estimates continuous power in the region of 350kW-400kW and says the compact motor could allow configurations of four or two motors, offering evidence to reshape OEM powertrain design.
  • In the near future YASA will release more validation data as its motors, integrated into Koenigsegg Regera and Ferrari Stradale SF90 hybrid, reportedly triple radial motor performance density.
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12 Articles

This axial electric motor, weighing just 13 kg, is capable of generating more than 1,000 hp. A functional prototype in the testing phase is preparing to hit the market and aims to revolutionize the way electric cars are made and move. The British firm Yasa, owned by Mercedes-Benz, has surprised everyone once again with a new axial flux electric motor that promises to revolutionize the performance of electric cars. Weighing just 13 kg and produci…

The British specialist YASA, owned by Mercedes, has just set a new world record. This, with an ultra-compact and powerful electric motor. A technological prowess that could upset the design of future electric sports from the brand to the Star. 13 kilos, 1,000 horsepower: an unprecedented feat YASA, a subsidiary of Mercedes since 2021, has just unveiled a prototype of electric motor that pushes the limits of automotive physics. This small enginee…

The British YASA, a pioneer in axial-flow electric motor technology, has once again broken its own unofficial world power density record, with an even lighter and more powerful prototype. Just three months after its last achievement, the Oxford-based company has reached an impressive figure: 80 hp/kil, which represents a 40% increase over its previous brand. A new benchmark in electrical engine engineering The new YASA prototype weighs only 12.7…

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Electrek broke the news in on Wednesday, October 22, 2025.
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