BYD has filed a patent for a long-wheelbase variant of the Denza D9 MPV. Images published by China’s National Intellectual Property Administration (CNIPA) show a stretched MPV that’s highly similar to the regular D9, and like BYD’s microcar, the filing lists chief designer Wolfgang Egger as one of its creators.

What’s new with the long D9

The latest images confirm that the stretched D9 is well under development, with the first prototype sightings appearing in early 2026. BYD observers with a keen eye should be no stranger to the light and dark blue patterns on the D9 test mule, the go-to pattern for the NEV giant’s prototype cars.

Not much has changed with the MPV’s exterior, with certain details, like the roof-mounted LiDAR unit and the fender-side cameras, appearing in both the patent images and the real-life spy shots. The wheel designs also seem almost identical, featuring two-tone 15-spoke rims.

The patent images don’t reveal any new information about the MPV itself. Still, it can be presumed that BYD and Denza are finalising the model’s exterior designs before moving on to pilot, then mass, production.

More on the “D9L”

The “D9L” is expected to come with all the bells and whistles seen on the regular D9 MPV, if not one-upping it in terms of comfort and luxury features. The standard D9, refreshed in April 2026, can be optioned with up to 10 displays, including second-row armrest screens, headrest displays, and a rear ceiling-mounted screen.

BYD and Denza have jumped on the AI bandwagon as well, and boast that the refreshed D9 comes with an “AI cockpit”. All seats in the D9 come with heating, ventilation, and power adjust functions, and the second row can be optioned with 16-point massage “Zero Pressure Cloud Velvet” seats.

Ride and comfort are maintained by BYD’s dual-valve DiSus-C active suspension, which the NEV giant says helps reduce motion sickness while driving. It also claims to help keep the vehicle stable in strong crosswinds or during high-speed tyre-blowout scenarios.

The firm’s DiPilot 300 system, also known as God’s Eye B, handles assisted driving. The MPV’s sensor suite includes a roof-mounted LiDAR unit, three mmWave radars, and twelve ultrasonic radars. It supports Navigation on Autopilot (NoA) in cities and on highways, and it also supports auto-parking functions.

The D9 MPV retails between 329,800 and 469,800 yuan (49,400 and 70,400 USD). EV models get a 115 kWh LFP pack made in-house by BYD, enabling a CLTC range of 800 km (~648 km WLTP) on FWD trims, which get a 340 kW (456 hp) front motor.

AWD trims get an additional 70 kW motor at the back, bringing total motor power to 410 kW (550 hp), but CLTC range drops to 750 km (~608 km WLTP).

PHEV models come standard with AWD, combining a 115 kW (154 hp) 1.5-litre turbocharged engine up front with a 200 kW (268 hp) motor, working in tandem with a 45 kW (60 hp) motor out back.

Thanks to BYD’s new ‘Heyuan’ hybrid platform, PHEV D9s now come with larger 66.5 kWh LFP batteries, good for 401 km of EV CLTC range (~325 km WLTP). The base PHEV trim only runs 350 km CLTC in EV mode (~284 km WLTP) due to a smaller 58.5 kWh pack. All EV and PHEV trims support Flash Charging.

According to China EV DataTracker, Denza delivered 5,056 D9 units domestically in September 2026.

Source: WeChat – Di Fen Zhi Jia (Home of BYD Fans)