Dodge moved upmarket with the Custom Royal in the mid-1950s, which cut into and eroded DeSoto's traditional market segment. The introduction of the 1957 DeSoto Firesweep, a model that used the Dodge engine, chassis, front fenders and hood, pushed DeSoto into direct competition with the Custom Royal. The Firesweep sold well, but at the expense of the higher-priced Firedome and Fireflite models. The DeSoto began looking like a Chrysler with a different grille and taillights, which, in an era of strong make identification, was a recipe for disaster.