Yasa Sets New Record with 42 kW/kg Power Density

Update on World Record Motor 42 kW/kg Power Density: Yasa Releases Update

2025-10-23 From Michael Richter | Translated by AI 2 min Reading Time

Related Vendors

Yasa already made headlines with the announcement of a new world record motor. Now the measurements have been confirmed: The drive, weighing only 12.7 kilograms (~28 pounds), achieves a peak power of 750 kilowatts (over 1,000 bhp), setting new standards in electric drive technology.

A symbol of engineering: The 59 kW/kg motor redefines efficiency.(Image: YASA Motors on LinkedIn) — A symbol of engineering: The 59 kW/kg motor redefines efficiency.
(Image: YASA Motors on LinkedIn)

An electric motor with over 1,000 hp, held in a single hand. What was considered unrealistic just a few years ago is now a reality. British electric motor specialist Yasa has unveiled a new unit that achieves a peak output of 750 kilowatts (over 1,000 bhp) while weighing only 12.7 kilograms (~28.0 pounds). This sets a new benchmark for power density and efficiency in electric drive technology.

World Record in Power Density

The new unit achieves a power density of 59 kW per kilogram, an increase of approximately 40 percent over Yasa's previous best of 42 kW/kg. For comparison: this is 2.5 times more than the best currently available radial machines and about six times more than typical drives in modern high-performance electric vehicles, which usually range from 5 to 15 kW/kg.

Example image: Dual-motor front e-axle – central component of the new high-performance e-drive technology from YASA and Automobili Lamborghini. (Image: YASA Limited)

This moves Mercedes-Benz subsidiary Yasa's boundaries of electric drive technology another significant step forward. Particularly noteworthy: the motor's continuous output is approximately 500 bhp, demonstrating that this is not a short-term performance peak but a technically robust design.

Two Decades of Technological Leap

Within just 20 years, Yasa has increased the power density of its electric motors by a factor of 50. This development makes the company one of the most innovative providers of compact, axial flux-based drives. The current generation thus represents the preliminary culmination of continuous optimization of magnetics, cooling, and mechanical design.

Technical Specifications

Voltage: 820 V DC
Current: 940 A RMS
Weight: 12.7 kg / 28 pounds (including housing, rotor, shaft)
Operating temperature (start): approx. 50 °C (~122 °F)

This combination of high voltage and current allows for enormous torque and an unprecedented power density in an extremely compact format.

A Look into the Future

Yasa still left it unclear for which specific application the new world record motor was developed, but hinted that it is a particularly demanding project. Industry observers suspect its use in high-performance areas, such as electric supercars, aerospace applications, or specialized vehicles.

What is certain: With this development, YASA not only delivers a technological milestone but also a preview of the future of high-performance electric drives – more compact, efficient, and powerful than ever before. (mr)

Subscribe to the newsletter now

Don't Miss out on Our Best Content

Business E-mail

Please enter a valid mailadress.

By clicking on „Subscribe to Newsletter“ I agree to the processing and use of my data according to the consent form (please expand for details) and accept the Terms of Use. For more information, please see our Privacy Policy. The consent declaration relates, among other things, to the sending of editorial newsletters by email and to data matching for marketing purposes with selected advertising partners (e.g., LinkedIn, Google, Meta)

Date: 08.12.2025

Naturally, we always handle your personal data responsibly. Any personal data we receive from you is processed in accordance with applicable data protection legislation. For detailed information please see our privacy policy.

Consent to the use of data for promotional purposes

I hereby consent to Vogel Communications Group GmbH & Co. KG, Max-Planck-Str. 7-9, 97082 Würzburg including any affiliated companies according to §§ 15 et seq. AktG (hereafter: Vogel Communications Group) using my e-mail address to send editorial newsletters. A list of all affiliated companies can be found here

Newsletter content may include all products and services of any companies mentioned above, including for example specialist journals and books, events and fairs as well as event-related products and services, print and digital media offers and services such as additional (editorial) newsletters, raffles, lead campaigns, market research both online and offline, specialist webportals and e-learning offers. In case my personal telephone number has also been collected, it may be used for offers of aforementioned products, for services of the companies mentioned above, and market research purposes.

Additionally, my consent also includes the processing of my email address and telephone number for data matching for marketing purposes with select advertising partners such as LinkedIn, Google, and Meta. For this, Vogel Communications Group may transmit said data in hashed form to the advertising partners who then use said data to determine whether I am also a member of the mentioned advertising partner portals. Vogel Communications Group uses this feature for the purposes of re-targeting (up-selling, cross-selling, and customer loyalty), generating so-called look-alike audiences for acquisition of new customers, and as basis for exclusion for on-going advertising campaigns. Further information can be found in section “data matching for marketing purposes”.

In case I access protected data on Internet portals of Vogel Communications Group including any affiliated companies according to §§ 15 et seq. AktG, I need to provide further data in order to register for the access to such content. In return for this free access to editorial content, my data may be used in accordance with this consent for the purposes stated here. This does not apply to data matching for marketing purposes.

Right of revocation

I understand that I can revoke my consent at will. My revocation does not change the lawfulness of data processing that was conducted based on my consent leading up to my revocation. One option to declare my revocation is to use the contact form found at https://contact.vogel.de. In case I no longer wish to receive certain newsletters, I have subscribed to, I can also click on the unsubscribe link included at the end of a newsletter. Further information regarding my right of revocation and the implementation of it as well as the consequences of my revocation can be found in the data protection declaration, section editorial newsletter.