On October 19, information from Tianyancha revealed that Xiaomi Auto Technology Co., Ltd. was recently granted a utility model patent for a "range extender, powertrain, and vehicle" on October 16, and the patent remains in effect. The application for this patent was submitted on October 27, 2025. According to the patent abstract, this innovative range extender features a side-by-side arrangement of the engine and motor assembly, with the generator and motor controller positioned parallel to the engine's axis. This design ensures that there is no additional increase in the overall size of the range extender along the engine's axis. Specifically, it minimizes the longitudinal space required when the engine is mounted longitudinally and reduces the transverse space needed when the engine is mounted transversely. By allowing the motor controller and generator to share space along the engine's axis, this layout significantly enhances space efficiency.