2026 BYD Seagull Filing Details Revealed: Body Lengthened by 425 mm, Motor Upgraded to 127 hp

Recently, BYD's latest batch of the Announcement of Road Motor Vehicle Manufacturers and Products (Seventh Batch of 2026) was officially released, revealing the application details for the 2026 BYD Seagull all-electric hatchback. This update is not a minor facelift but a generational upgrade built on an entirely new platform — bringing significant changes to vehicle dimensions, powertrain, and intelligent features.

According to the filing data, the new model measures 4,205 mm × 1,810 mm × 1,570 mm in length, width, and height, with a wheelbase of 2,650 mm — up 150 mm versus the current generation. Overall length increases by 425 mm, bringing it notably closer in scale to the BYD Dolphin platforms. This structural expansion aims to enhance rear-seat space and trunk practicality, strengthening its competitiveness in the A0-segment pure-electric small-car market.

Powertrain-wise, the vehicle adopts a permanent-magnet synchronous motor (model: TZ164XYB) manufactured by Zhengzhou BYD Automobile Co., Ltd., delivering a peak output of 95 kW (127 hp) — a substantial jump from the current 55 kW (75 hp). Its top speed is rated at 150 km/h. The battery system continues using lithium iron phosphate (LFP) cells, supplied and fully integrated by Shaoxing BYD Co., Ltd., maintaining BYD's established technical path emphasizing cost efficiency and high safety.

In terms of curb weight, the base variant weighs 1,180 kg, with a gross vehicle weight rating (GVWR) of 1,555 kg; the higher-spec version reaches 1,255 kg curb weight and 1,630 kg GVWR. All trims come standard with 205/60 R16 tires and feature a five-seat layout. Exterior customization options include aerodynamic alloy wheels, fender trim strips, side skirts, and region-specific badges.

Notably, the filing introduces a new optional feature: a 'high-mounted brake light-integrated camera' — confirming earlier spy-shot evidence of upgraded ADAS hardware. This configuration may support expanded L2-level driver assistance functions, though specific capabilities and production rollout timing remain unconfirmed.

From a market perspective, third-party data shows that in June 2026, the Geely Galaxy EX2 (Xingyuan) sold 33,359 units domestically, while the BYD Seagull achieved 9,825 units in the same period. Amid accelerating segmentation in the A0 pure-electric market, this dual upgrade — both in size and performance — is widely viewed by industry observers as a pivotal move by BYD to solidify its foothold in the entry-level EV segment. It should be noted that the model remains in the application phase; launch timing and final pricing have yet to be announced.