Core Viewpoint - Xiaomi's decision to limit the maximum horsepower of the SU7 Ultra to 900 HP unless drivers complete a timed lap on a designated track has sparked significant discussion and criticism among car owners, who feel this restricts the vehicle's performance without prior consultation [2][5][6] Group 1: Product Features and Updates - The recent update to Xiaomi HyperOS introduced a "ranking mode" that requires drivers to achieve a specific lap time on a designated track to unlock the full 1548 HP of the SU7 Ultra [2][3] - Previously, drivers could unlock all performance modes by passing a safety test, but now they must complete a track test to access the full power [2][3] Group 2: Market Reception and Customer Sentiment - Many users support the new limitation, arguing that the 1500 HP is too powerful for average drivers and could lead to accidents if not handled by experienced drivers [5] - The SU7 Ultra, launched on February 27, is priced at 529,900 yuan and aims for a sales target of 10,000 units, with performance being a key selling point [6]