Core Insights - The C-AHI China Automotive Health Index has made significant advancements in evaluating vehicle health, with an average score of 93.5 across 12 models in 2025, and 83.4% of models scoring above 90 points, indicating notable progress in the automotive industry's focus on in-car health [1] Group 1: Fresh Air - In the Fresh Air category, approximately 67% of models have volatile organic compound (TVOC) concentrations below 1 mg/m³, indicating good air quality, and the "new car smell" issue has improved significantly, with average odor levels approaching acceptable thresholds [2] - However, there are still significant differences in formaldehyde and acetaldehyde concentrations among mainstream brands, with some models exceeding 1.5 mg/m³, highlighting ongoing challenges in controlling aldehyde substances [2] Group 2: Health Protection - The Health Protection category shows that most models effectively block particulate matter, with 11 out of 12 models achieving particulate matter levels of ≤3 µg/m³, and the average purification time for air inside vehicles is 2.71 minutes, ensuring clean air [4] - The allergen risk management has seen a remarkable improvement, with a 100% five-star rating for allergen risk in 2025 models, up from 82.8% in 2023, reflecting significant investments by manufacturers in material safety [6] Group 3: Green Travel - The Green Travel category focuses on vehicle energy consumption and overall range reliability, with average energy consumption decreasing and charging times for 100 kilometers reduced from 14 minutes in 2022 to 9.2 minutes in 2025, alleviating user charging anxiety [11] - Nonetheless, the winter range reduction rate for electric vehicles remains high at 32.5%, and issues with high-speed range reduction persist, indicating that overall range reliability is still a key area for improvement [11] Group 4: Health Index Innovations - By the end of 2025, the C-AHI health index has published results for 127 models, covering various types of vehicles and energy forms, with a focus on standard system innovation [13] - The index has introduced three core technologies, including the first comprehensive assessment standard for in-car environmental pollution, tailored testing methods for local driving conditions, and the establishment of a joint research center for automotive health, setting clear industry benchmarks [13] - Looking ahead to 2026, the C-AHI health index aims to drive high-quality development in the automotive industry, supporting China's position in the global health mobility sector [13]

Group 1 - The core announcement is that Xiaomi's YU7 Max received the highest ratings across three evaluation dimensions in the China Automotive Health Index (C-AHI) by the China Automotive Engineering Research Institute [1][3] Group 2 - YU7 Max achieved a 5-star+ rating in Fresh Air, Health Protection, and Green Travel categories [2][4] - The vehicle utilizes a significant amount of green and eco-friendly materials and processes to reduce the release of harmful volatile substances like formaldehyde [2][4] - It is equipped with a HEPA air purification system that filters over 99.95% of pollutants in the size range of 0.05-0.3μm, minimizing the entry of outdoor air pollutants into the cabin [2][4] - The car's interior features eco-friendly materials in high-contact areas, such as seats and central armrests, which are safe for children aged three and under, reducing allergen risks for infants and sensitive individuals [2][4]