Group 1 - The IAA Mobility 2025 showcased a significant presence of both Chinese and European automotive manufacturers, highlighting the ongoing rivalry between Europe and China in the automotive sector [2][3] - A notable number of Chinese OEMs were present, including Aito, BYD Auto, Changan, Chery, Dongfeng, FAW, GAC Group, Leapmotor, and Xpeng, while European manufacturers also increased their participation [2] - The availability of Chinese models in Europe is uncertain, with many models displayed requiring reconfiguration for the European market, indicating potential delays in market penetration [4] Group 2 - The homologation process for Chinese models is lengthy and costly, which may hinder the rapid introduction of these vehicles into the European market [4] - The evolution of models, such as the BYD Seagull to the Dolphin Surf, exemplifies the adjustments needed for compliance with European standards [4]