Vehicle access seating supports a user seat unit using a mounting assembly, a fore-aft slide assembly, a swivel assembly and an extension/retraction assembly. The seat unit moves from a secured drive position on either side of the motor vehicle to an access position wherein at least part of the seat is outside the vehicle, facilitating user vehicle access. Moving from the drive position to the access position, the seat moves linearly along two axes—one (static) defined by the mounting assembly, and a second axis (pivotable) defined by the seat itself—increasing the seat occupant's legroom by reducing the clearances between the seat and the vehicle B-pillar and between the seat and the vehicle transmission tunnel. A vertical mounting recline angle improves the occupant headroom inside the vehicle. Moving between the drive and access positions, the seat can move through a narrow transition corridor in the motor vehicle.