A vehicle includes a cabin and a passenger seat assembly located in the cabin. The passenger seat assembly includes a base support assembly mounted to a floor of the cabin and comprising walls that form a storage compartment. A seat is supported by the base support assembly. The seat includes a seat back frame that supports one or more cushions thereon. A seat base frame supports one or more cushions thereon forming a seat base. The seat base frame is formed as a monolithic, single piece structure from a plastic resin material. The seat base frame has a sitting portion and a raised portion located forward of the sitting portion. The raised portion increases in elevation above the sitting portion to an apex of increased distance from the floor.