Chinese carmaker BYD has pushed the boundaries of electric vehicle performance once again, with its Yangwang U9 Xtreme becoming the first production car to exceed 500km/h during a high-speed record attempt.

Driven by Le Mans-winning racer Marc Basseng, the electric hypercar reached 503.16km/h on Sheikh Khalifa Bin Zayed International Road in Abu Dhabi, United Arab Emirates, surpassing its previous benchmark of 496.22km/h.

The achievement earns the U9X a Guinness World Record for the fastest production car in a single-direction run, along with the distinction of being the fastest production electric vehicle.

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However, there is an important qualification. Traditional production-car speed records require an average of two runs in opposite directions to compensate for wind and road gradients.

Because the Yangwang completed its record attempt in only one direction, the SSC Tuatara’s two-way average of 455.3km/h remains the benchmark under those rules. Bugatti’s celebrated 490.5km/h run in the Chiron Super Sport 300+ was also achieved in a single direction.

The latest record followed several days of preparation on a roughly 10km stretch of public highway temporarily closed to traffic.

Given the road’s desert location, crews had to thoroughly clean the surface to remove sand, debris and any contaminants that could compromise grip at extreme speeds.

Initial attempts on October 31 fell short of the target, with the Yangwang reaching a maximum of approximately 490km/h.

Engineers subsequently made adjustments to the car’s suspension software, increasing rebound damping to improve stability over the road’s uneven surface. The rear wing was also repositioned to generate additional downforce.

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Those changes helped deliver the breakthrough during one of two runs conducted on November 1.

The U9X uses four electric motors producing a combined output approaching 2200kW, enabling acceleration from 0–100km/h in a claimed 2.36 seconds. Production is restricted to just 30 examples.

The achievement was accompanied by reports of a separate high-speed testing accident in China, where footage emerged showing a U9X losing control and crashing at considerable speed. Chinese media reported that the driver escaped injury.

Yangwang is BYD’s flagship luxury and performance division, with a growing portfolio that also includes the U8 off-road SUV, notable for its ability to perform tank-style turns using independently controlled electric motors.

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While BYD continues expanding its Australian operations, there has been no confirmation that the Yangwang U9X will be offered locally.

For now, its latest achievement provides another demonstration of how rapidly Chinese manufacturers are advancing high-performance electric vehicle technology.