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Core Viewpoint - The launch of the Xiaomi YU7 is seen as a critical test for Xiaomi's automotive ambitions, with high expectations from fans and investors alike [1][2]. Group 1: Product Launch and Performance - Xiaomi YU7 achieved over 289,000 pre-orders within one hour of its announcement [1]. - The starting price for the YU7 is set at 253,500 yuan, while the AI glasses are priced at 1,999 yuan [1]. - The CEO expressed that if the initial order performance of YU7 surpasses that of SU7, it would be considered a success [3]. Group 2: Market Competition - The SUV market is described as highly competitive, with many strong players, making the YU7's entry particularly challenging [2]. - Xiaomi is confident in its product but acknowledges the intense competition and high expectations from consumers and partners [2]. Group 3: Product Specifications and Development - The YU7 features a CLTC range of 835 km, laser radar, and a Thor chip with 700 TOPS computing power, positioning it competitively within the industry [3]. - The YU7 is not merely an upgraded version of the SU7; 90% of its components have been newly developed, indicating significant innovation [3]. - The user interest for YU7 has reportedly been three times higher than that of SU7 during the same period, suggesting strong market demand [3].

Group 1 - The article discusses various factors affecting the range of electric vehicles, emphasizing that beyond low temperatures, many subtle elements can impact battery performance [1][2] - Brake calipers can significantly influence vehicle range due to drag torque when they do not fully release, leading to increased energy consumption [4][6] - Data from manufacturers indicate that at -7°C, drag torque from brake calipers can increase by 50%, potentially reducing the actual range of a 500 km electric vehicle by 15-20 km [4][6] Group 2 - Design flaws in electronic parking brake systems can lead to excessive drag torque, which not only raises brake disc temperatures but also diminishes range [6] - Insufficient lubrication of caliper guide pins and other mechanical factors can also contribute to drag torque, resulting in uneven wear on brake components [8] - The average drag torque for mainstream calipers is around 1.5 Nm, with some suppliers offering calipers that can reduce this to below 1.0 Nm, enhancing vehicle range [10] Group 3 - The viscosity of lubricating oil in the drivetrain increases in low temperatures, leading to reduced transmission efficiency and further impacting winter range [12] - Tire rolling resistance is a significant factor affecting range, as it is influenced by the weight of electric vehicles and the properties of the tires [14][16] - Michelin data indicates that 90%-95% of tire rolling resistance comes from the repeated deformation of the tire during rolling [16] Group 4 - Lowering tire deformation can reduce rolling resistance, and optimizing rubber materials can also help achieve this [18] - The wind resistance coefficient does not always correlate with energy efficiency, as factors like vehicle speed play a crucial role in energy consumption [19][21] - Energy consumption increases exponentially with speed; for instance, at 120 km/h, the power requirement can reach approximately 31 kW, compared to 2.3 kW at 30 km/h [25]