sedan
Automotive Term
A sedan is a fully enclosed four door automobile. With full width seats in front and rear. A sedan should have a passenger capacity of 4 - 6 people. According to Car and Driver, the term "sedan" refers to a fixed-roof car with at least four doors or any fixed-roof two-door car with at least 33 cubic feet of rear interior volume.
Related names include close-coupled sedan, saloon car, convertible sedan, imperial sedan, and Landaulet sedan.