Disclosed is an information processing system for a vehicle that calculates a recommended position of a driving operation in a predetermined area in which the driving operation is supported. The information processing system for a vehicle includes storage means for storing driving operation information of a driver and position information of the vehicle in each predetermined area so as to be associated with each other. The information processing system for a vehicle specifies a driving operation pattern of the predetermined area considering the state of the driving operation over the inside and outside of the predetermined area and determines the recommended position of the driving operation in the predetermined area according to the specified driving operation pattern, on the basis of the information stored in the storage means. According to this structure, even when some driving operations of a driving operation group included in the driving operation pattern are performed outside the area, it is possible to specify the driving operation pattern, determine the recommended position of the driving operation, and perform high-accuracy driving support suitable for the driver.