Overview

• German racer Marc Basseng drove the U9 Xtreme to 496.22 km/h at Automotive Testing Papenburg on September 14, with the reported run appearing to be in a single direction.
• BYD positions the result as faster than the Bugatti Chiron Super Sport 300+ one-way mark of about 490.5 km/h, while the Koenigsegg Agera RS two-way record remains a key benchmark under stricter criteria.
• The prototype used four electric motors rated at a combined 2,220 kW on a 1,200‑volt architecture to achieve the speed shown in BYD’s video.
• The test car carried hardware changes for high-speed stability and drag reduction, including smaller 20-inch wheels, 325-mm tires and an altered front track with track-focused suspension tuning.
• BYD says the U9 Xtreme will be limited to at most 30 units and has not announced pricing, while media reports cite a high-discharge LFP Blade pack as possible but BYD has not detailed the battery setup.