Vehicle with sliding door

A vehicle (10) includes: a front side door (18) configured to open and close a vehicle front side of a door opening (16) and including a door opening degree sensor (22); a rear sliding door (24) configured to open and close a vehicle rear side of the door opening (16) and including an electrically-driven power unit (26); a front seat (30) pivotable toward an outer side in a vehicle width direction and including a front seat angle sensor (36); a door opening degree sensor 22 configured to detect an opening degree of the front side door (18); and a control device (42) configured to derive that magnitude of the door opening (16) which allows an occupant to easily get on and off the vehicle and a necessary rear sliding door moving amount based on the opening degree of the front side door (18) and a pivoting angle of the front seat (30), and to control the electrically-driven power unit (26) to open-operate the rear sliding door (24).