C-Max is about 300 pounds heavier than Prius v despite a smaller footprint, and has about the same amount of passenger space though a bit less cargoroom.
Think about how much the car has changed, back in the 50s a car would do just as much as your pick up truck does now, carry enough cargo and have plenty of room.
Dimensionally, the Nissan LEAF falls in between the Nissan Altima and Nissan Versa, and like those vehicles provides room for five adults and a good-sized cargo area.