A long-wheelbase version of the Denza D9 MPV has surfaced in a design patent filed by BYD in China. The patent, CN 310308321 S, was published by the China National Intellectual Property Administration (CNIPA) on November 10. BYD filed it on June 3, 2025, under application number 202530315507.5.
Design patents only cover styling, so there are no dimensions or powertrain details, and the product is listed as a “car”. Chinese media have dubbed it the D9L, although Denza has yet to confirm the name.
Five designers are listed: Lian Yubo, Wolfgang Egger, Pan Zilin, Zhang Ruiqi and Chen Zhenlin. Lian is BYD Group’s chief scientist and chief automotive engineer, and Egger is BYD’s global design director. Egger is also credited on the patent for the two-door BYD microcar, which was published on the same day.
