Research on financing efficiency evaluation of new energy automobile industry based on DEA BCC model and Malmquist model

since the establishment of the "green development concept", the financing efficiency of the new energy automobile industry, as an important engine to promote the coordinated development of green finance, has attracted widespread attention. Based on the industry chain statistics of tonghuashun Ifind financial database, this paper selects the relevant data of 613 listed companies from 2016 to 2022, and the remaining 331 effective decision-making units are processed. The financing efficiency of China's new energy automobile industry is measured and studied by using investment oriented variable return to scale BCC model and Malmquist index model. The research shows that the overall financing efficiency level of China's new energy automobile industry is not high, and the financing efficiency level shows a non-linear downward trend, the pure technical efficiency shows a non-linear downward trend, the scale efficiency rises non-linear, and the number of enterprises with increasing returns to scale rises non-linear. Technological progress is the main factor restricting the financing efficiency of China's new energy automobile industry. The lack of scale efficiency, technical efficiency and pure technical efficiency will also affect the financing efficiency of the new energy automobile industry.