World’s Most Powerful Electric Motor (Per Kilo) Just Launched — And It’s the Size of a Dinner Plate

A silent revolution is happening inside the electric vehicle industry--and this time, it's all about what's hidden under the hood. YASA, the British engineering company acquired by Mercedes-Benz, has unveiled what may be the most advanced electric motor ever developed for high-performance applications. Lighter than ever and capable of delivering record-breaking power density, the new motor doesn't just raise the bar for EV performance--it obliterates it.

YASA, already known for pioneering axial flux motor technology, has introduced its latest generation motor that weighs just 23 kilograms yet can unleash up to 800 Nm of torque and over 300 kW of power. To put that in perspective, that's more than enough to power a supercar--and it all comes from a unit smaller than a pizza box. This astonishing torque-to-weight ratio makes it, by far, the most power-dense electric motor currently announced for automotive use.

What's so different about YASA's design is its use of axial flux architecture, a radical departure from the radial motors used in most electric cars today. Instead of spinning like a cylinder, YASA's motor works more like a disc, with magnetic forces arranged across a flat plane. This design not only saves space but allows for much higher torque output at lower mass, making it ideal for performance-driven vehicles and compact powertrains.

This technology isn't theoretical--it's already in production. YASA has been powering Ferrari's SF90 Stradale with its previous-gen motors and has been tapped as a core technology provider for Mercedes-Benz's upcoming electric AMG models. With this new generation, Mercedes may now hold the keys to producing EVs that match or even exceed the emotional performance of internal combustion supercars--a challenge that's eluded many brands chasing the "soul" of high-end motoring in the electric era.

Beyond speed, YASA's breakthrough also addresses some of the biggest bottlenecks in EV design: weight and thermal efficiency. Lighter motors mean better range, faster acceleration, and more room for other key components like batteries or cooling systems. And thanks to its compact structure and advanced cooling, the motor can operate at extremely high levels of sustained performance without overheating, a key issue for electric drivetrains under stress.

But make no mistake--this isn't just a supercar story. The implications of a motor this efficient and compact go far beyond the world of elite performance. If scaled successfully, this technology could be used in lightweight electric motorcycles, aerospace applications, robotics, or even next-generation personal air vehicles.

Any place where weight and power output matter, YASA's motor could be a game-changer. Mercedes-Benz, through YASA, is clearly staking a claim on the future of performance EVs. While rivals like Tesla, Porsche, and Rimac have made headlines with blistering acceleration and wild top speeds, most of that performance has come from brute-force battery output and software tuning.

YASA's innovation adds a new physical dimension: rethinking the motor itself, making it not just lighter and stronger, but smarter by design. This shift from software-first to hardware innovation comes at a crucial moment in the electric vehicle arms race. As consumers become more demanding and regulators tighten environmental expectations, automakers are under pressure to deliver cleaner, faster, and more exciting vehicles.

But simply adding more batteries or tweaking algorithms won't be enough. Breakthroughs in core engineering--like what YASA is offering--will define the next generation of mobility. And let's not overlook the strategic implications.

With full ownership of YASA, Mercedes-Benz now controls one of the most advanced motor technologies on the planet. That gives the German automaker an enormous advantage as it transitions its entire fleet to electric power. While other brands are still shopping for solutions, Mercedes is building them from within--and rewriting the rules in the process.

Even more impressive is how quiet YASA has been about its dominance. While other EV tech companies trumpet every prototype, YASA has quietly continued refining its axial flux technology over the years, partnering with select elite brands and proving its capabilities in real-world supercar conditions. Now, with this new motor, the company is ready to step out of the shadows.

Of course, questions remain. Can this technology scale affordably? Will the performance benefits translate across different vehicle types?

And how soon will we see production cars featuring this next-gen unit? While full answers are still to come, one thing is clear: this is no vaporware. The technology is real, tested, and already shaping the high-end EVs of tomorrow.

In a market flooded with hype, YASA's announcement feels different. It's grounded in hard engineering, backed by results, and supported by one of the most prestigious carmakers in the world. Whether you're a gearhead, an engineer, or just someone who dreams of a better EV future, this news should grab your attention.

Because when an electric motor this small can deliver this much power, the future of mobility doesn't just look faster--it looks radically lighter, cleaner, and smarter.

And the combustion engine's days at the top of the performance food chain may finally be numbered.