In this study, we delve deeply into the impact of IoT standardization on the digital transformation of automotive enterprises. Through detailed analysis, this paper reveals the dual role of IoT standardization in driving change in the automotive industry: both challenges and opportunities. The research emphasizes that IoT standardization is key to ensuring technological interoperability and system compatibility, crucial for enhancing manufacturing efficiency, quality control, and the innovation of new business models. Additionally, the article explores the main challenges in IoT technology integration, including technological compatibility, data security and privacy protection, as well as the difficulty in coordinating cross-industry standards. Furthermore, the study discusses the opportunities IoT standardization offers in market expansion, customer experience innovation, and promoting sustainable development and environmental responsibility. The conclusion of this paper points out that, although the process of IoT standardization is fraught with challenges, it provides a significant driving force and vast potential for the digital transformation of the automotive industry.