The weight reduction and emission reduction of automobiles are the only way for the rapid development of the automobile industry. Energy conservation and environmental protection issues are increasingly concerned. New energy vehicles have become the development trend of the future automobile industry. Engineering plastics have such advantages as structural dimensional stability, chemical stability, fatigue strength and toughness, high weather resistance, and good insulation. Composite materials have been put into use, Composite materials and new technologies represented by long fiber reinforced composite structures are a new starting point in automotive manufacturing, and new challenges will bring another round of innovation to the car washing industry.