An enclosed single-compartment body with two doors and varying passenger capacity depending on seat arrangements The SAE standard J1100 defines it as having less than 33 cubic feet of interior volume Larger coupes have rear quarter windows Coupes have fixed permanent back panels and top, as well as a luggage compartment in the rear deck
A closed car with two side doors and less than 33 cubic feet of rear interior volume, according to measurements based on SAE standard J1100 A two-door car is therefore not necessarily a coupe