The Impala was Chevrolet's most expensive passenger model through 1965 and had become the best-selling automobile in the United States.
For its debut in 1958, the Impala was distinguished from other models by its symmetrical triple taillights. The Caprice was introduced as a top-line Impala Sport Sedan for model year 1965, later becoming a separate series positioned above the Impala in 1966, which, in turn, remained above the Bel Air and the Biscayne. The Impala continued as Chevrolet's most popular full-size model through the mid-1980s. Between 1994–96, the Impala was revised as a 5.7-liter V8–powered version of the Caprice Classic sedan.