Syed Saif Ul Hassan 
Sep 27, 2025
The realm of supercars has been getting richer, registering numerous powerful entries very frequently, and yet it long remained dominated by Bugatti’s Chiron Super Sport 300+. However, BYD's luxury sub-brand, Yangwang, has announced that its U9 Xtreme hypercar has become the fastest in the world by achieving a mind-boggling speed of 496.22 km/h (308.4 mph).
Declaring its supremacy in the highly competent supercar space, BYD claimed that its U9 Xtreme beat Chiron Super Sport 300+, which peaked at 490.48 km/h (304.77 mph).
BYD's proclaimed world's fastest supercar was driven by Marc Basseng at Germany’s ATP Papenburg test track to set a new world record.
Bugatti has been synonymous with top-tier automotive engineering for over 20 years, known for manufacturing vehicles that can exceed 300 mph, outweighing competitors while leaving them amazed.
What makes BYD's U9 Xtreme the world's fastest car?
BYD's world's best hypercar stands as a true spectacle of sustainable technology outpacing traditional combustion vehicles, as Yangwang's U9 Xtreme is fully electric, while the Bugatti Chiron is powered by a powerful quad-turbo, 8.0-litre W16 engine.
To beat the Bugatti Chiron Super Sport 300+, U9 Xtreme utilises BYD’s advancements in blade battery technology, thermal management, and electric drivetrains. This sophisticated combination of technological breakthroughs is complemented by DiSus-X body control software that synchronises suspension, aerodynamics, and stability at high speeds.
This accomplishment signifies a shift in innovation, with China not only leading in mass-market EVs but also claiming the hypercar title, challenging Europe and dethroning Bugatti’s legacy in speed.
Nevertheless, enthusiasts should bear in mind that this record was achieved in a single run, not the two-way average needed for official certification.
Another notable facet of the development is that only 30 units of the U9 Xtreme will be made.
As the fastest car is now electric and Chinese, the question is: will combustion-driven supercars fade more quickly than estimated?
