On August 21, 2026, the 2026 Chengdu International Auto Show commenced at the Western Expo City. WEY showcased its theme “WEYfor Trust,” unveiling the dual flagship models WEY V8X and WEY V9X based on the Guiyuan S platform. The entire lineup, including the new Highland family and the new Mocha Hi4 Max edition, was simultaneously presented.
The development of the Guiyuan S platform spanned six years, amassing over 2 million kilometers of equivalent user-condition testing. It covered extreme cold, high temperatures, high humidity, and high altitude scenarios. High-temperature reliability was verified by enduring over 60 days in 70°C conditions in Turpan, testing battery thermal management, cabin insulation, and electronic control system durability. Simulated heavy rain tests involved sustained driving under 120 mm/hour rainfall, verifying the reliability of high-voltage system insulation, sealing, and auxiliary driving sensors.
WEY defines boundaries for smart technology applications: AI is used solely for enhancing R&D efficiency and simulation assistance, while core aspects related to vehicle safety, durability, and driving experience quality rely entirely on real vehicle physical testing. For cabin health, the WEY V8X/V9X undergoes high-temperature formaldehyde testing to maternal and infant standards and utilizes antibacterial and antiviral materials along with coconut shell carbon-purification carpets. Prior to the auto show, WEY deployed a dedicated road test fleet in the Sichuan-Chongqing area, completing field collection on 13 typical user routes.
The WEY V8X/V9X is equipped with the super Hi4 hybrid system, achieving intelligent energy management for coordinated fuel-electric distribution, maintaining power output in high-altitude environments, and delivering sub-4-second zero-to-100 km/h acceleration performance even in battery-depleted states. The overall range is 1,659 kilometers.
The new vehicles feature a fully in-house developed chassis, a closed dual-chamber air suspension paired with EDC continuous variable dampers and a road preview system, providing millisecond-level responsiveness to road undulations. Standard features include 20° bi-directional rear-wheel steering, reducing turning radius at low speeds, and a vehicle length exceeding 5 meters. Dynamic variable wheelbase and crab-walking mode allow for lateral movement.
Intelligence: The WEY V8X/V9X feature the AI Cockpit-Driving Assistant. The driving assistant supports automatic parking, active safety protection during heavy rain (AEB), and provides navigation aids for scenarios such as night mountain roads. The cabin assistant can memorize the travel preferences of the whole family, pre-adjust air conditioning temperature, seat posture, and navigation to frequently visited destinations, and prompt the preset status of oxygen bottles according to altitude changes. 
From the start, WEY has been dedicated to one thing: creating truly reliable vehicles for users. This reliability is not just an empty “romantic” phrase but a visible promise backed by a comprehensive array of products, all-scenario travel experiences, and a full-service chain. It’s a concrete commitment deeply embedded in users’ daily travels. Looking ahead, WEY will continue to give its best in car manufacturing and reciprocate with love, launching more flagship products to continuously empower high-quality travel.
This article is a translation by AI of a Chinese report from 42HOW. If you have any questions about it, please email bd@42how.com.