Xiaomi Investigates SU7 Ultra Fire, No Signs of Thermal Runaway on Battery

The Xiaomi SU7 electric car on fire. (Photo: Carnewschina)

JAKARTA - A unit of the Xiaomi SU7 Ultra car caught fire on the Hero Bridge in Nanchang, Jiangxi Province, China and the fire was successfully extinguished by local firefighters, and no injuries were reported. Interestingly, even though the red hero devoured part of the car, the battery was still safe. As investigated from the Carnewschina website, Tuesday, the company has conducted an investigation at the scene. The result, the vehicle data in the back shows that the power battery was still in normal operating condition before the fire. The company added that no warning or thermal runaway signal was detected in the battery system. Based on the initial analysis, Xiaomi stated that the fire was ruled out as a result of the battery itself catching fire. The company noted that the exact cause has not been determined and will depend on the findings of the inspection and assessment of the local fire department.

Investigation is still ongoing The company has not revealed any additional details regarding the vehicle's speed, driving conditions, external factors, or possible involvement in the collision. Modern electric vehicles continuously record data from the battery management system, including cell voltage, temperature, charging status, and error signals. Thermal runaway events are usually associated with abnormal temperature increases or battery warning indicators. Xiaomi's statement indicates that these indicators were not present before the fire. The investigation of the fire department is expected to determine whether the origin of the fire is related to the vehicle itself, external sources, road conditions, collisions, or other factors. This incident in Nanchang comes after several cases of Xiaomi vehicle fires that have attracted public attention. In February 2026, Xiaomi responded to a separate SU7 fire , stating that initial findings indicate that the battery pack was not the source of the fire. Meanwhile, in October 2025 when a Xiaomi SU7 Ultra caught fire after an accident. The incident involved a collision, and reports indicate that people around the scene of the incident tried to save the victim before the vehicle was engulfed in flames.