The fifth generation of the Chevrolet Impala is a line of full-size cars produced by Chevrolet from the 1971 to 1976 model years. The largest generation of the model line, the fifth-generation Impala grew to a 121.5-inch wheelbase (125 inches for station wagons) The Impala was offered as a four-door pillared sedan, four-door hardtop (sport sedan), two-door custom coupe (sharing its formal roofline with the Caprice), two-door sport coupe (semi-fastback roofline, shared with other B-body coupes), and two-door convertible.