This report is Part of the curriculum Automotive Engineering III Ready to learn about the functions of the car. The process of automobile body parts of this report . To discuss Transmission system,Engine,Cluch,Structural systems, Intelligent control systems,Suspension system, and Body protection etc. For research and understanding of the transmission vehicles of HONDA รุ่น CR-V 2.4 EL 4WD. We hope this report will play a huge benefit to those studies