Quick Summary The Yanwang U9 Extreme hit a top speed of 308.4mph, making it officially the fastest production car on the market, beating the 304.77mph of the Bugatti. An electric car from Chinese company BYD has just overtaken Bugatti to become the world’s fastest production car. Called the U9 Xtreme, the EV comes from Yangwang, a sub-brand of Chinese automotive giant BYD. On 14 September, the car hit a top speed of 496.22 km/h, which is 308.4 mph – or about 4mph quicker than the previous record for a road-legal production car, held since 2019 by the Bugatti Chiron Supersport 300+. That’s double the power of the Bugatti Chiron and about a thousand more than the Rimac Nevera R and Lotus Evija.