A vehicle control system is configured to group objects detected by a plurality of sensors. The vehicle control system includes an integration device that groups detection information from the plurality of sensors and outputs integrated detection information, and a vehicle control device that controls a vehicle on the basis of the integrated detection information. An arithmetic device of the information integration device stores first time-series information of the first detection information and second time-series information of the second detection information in a storage device, calculates a correction parameter of the first detection information by grouping the first time-series information and the second time-series information when the first sensor and the second sensor detect the same object, calculates correction information obtained by correcting the first detection information using the correction parameter, and outputs the integrated detection information by instantaneous value grouping using the correction information and the second detection information.