Xiaomi Auto Details Durability Testing for Body and Closures: Extreme Conditions and High-Frequency Tests Ensure Longevity of Doors and Panels

Lei Jun recently provided a detailed overview of Xiaomi Auto's Body and Closure Durability Laboratory. This lab uses multi-axis robotic arms to repeatedly simulate user actions such as opening and closing doors and the hood, while simultaneously subjecting components to extreme temperatures, humidity, and dust conditions. These integrated tests comprehensively validate the fatigue life of the "four doors and two hoods" system over long-term use, ensuring smooth operation and reliable sealing performance. In addition, all components undergo dual testing for both durability and strength to verify functional integrity and safety under extreme operating conditions. Local stiffness test benches apply pressure and foot-load simulations on parts like doors and instrument panels, while body torsional rigidity tests mimic a "wringing towel"-style deformation. The SU7 and YU7 models achieve torsional rigidities of 51,000 N·m/deg and 47,610 N·m/deg, respectively—demonstrating outstanding performance. To date, Xiaomi Auto has established over 150 specialized laboratories across Beijing, Shanghai, Nanjing, and Wuhan, forming a nationwide R&D and testing network.