Summary
A BYD Yangwang U9 Xtreme reached 503.17 km/h (312.65 mph) on a closed section of the E11 highway in Al Dhafrah, Abu Dhabi, a run Guinness World Records has entered as the highest speed achieved by a production car in a single-direction run. The record is credited to BYD of China, with Marc Basseng of Germany driving. The Fédération Internationale de l’Automobile verified the speed on 1 November 2026. Two titles from one run Guinness World Records lists the Abu Dhabi run under two headings: highest speed achieved by a production car in a single direction, and highest speed achieved by an electric production car in a single direction. Passing 500 km/h “marks a significant engineering milestone for a production EV”, the record page says. Single direction, not two Both titles carry a qualifier from the record keeper. The records “relate specifically to peak speed in a single direction and should not be confused with conventional fastest-production-car records, which require different testing protocols, including runs in opposite directions”, Guinness World Records said. The 503.17 km/h figure is a peak speed registered travelling one way along the closed road, not an outright two-way production-car mark. How the speed was checked Guinness World Records says the speed was independently verified using the vehicle’s onboard speedometer and a calibrated VBOX system. An FIA representative reviewed the data and provided written confirmation to Guinness World Records as part of the verification process.