The server includes statistical processing section for sequentially statistically processing a ranking of causes of a defect on the basis of defect information on a vehicle transmitted by the inspection terminal. The repair terminal includes display section for displaying the defect information, instructing section provided in the display section to give an instruction on display of ranking of causes of the defect, and section for causing the ranking of the causes of the defect to be displayed on the display section when the instructing section is operated.