This paper analyzes the demands for low carbon development in China by introducing global climate change, including components of CO_2 emission, proportion of vehicle carbon emission in total emission. This paper also predicts vehicle fuel consumption limits for 2025 and 2030 based on the commitment of CO_2 emission reduction made by the Chinese government within the framework of Paris Agreement. The demand for low carbon auto technologies in China is analyzed, the technology roadmap for the development of low carbon auto in China is proposed, and low carbon proposals are raised in aspects of the nation, the society, the auto industry as well as auto OEMs.