In 1954 Buick Roadmaster and Super shared with Cadillac and Oldsmobile 98 the new General Motors C-body, adopting the new "ponton" appearance, and the addition of "Dagmar bumpers" to the front. These were large, roomy cars, as much as five and a half inches longer in wheelbase and more than nine inches (229 mm) longer overall than in 1953. Roadmaster script was found on the rear quarters and within the deck ornament. Rear fenders had a blunted fin at the rear edge, with dual "bullet" taillamps below. A new panoramic windshield with vertical side pillars was used.
Seats had chrome bands on 2-door models and rear seats had an armrest on 4-door models. The front suspension was refined and Roadmaster's horsepower was increased to 200. The pillared coupe and the Estate wagon were no longer offered as body styles.

• Buick Roadmaster Convertible (76C-4767X) '1954 Produced in 3305 copies
• Buick Roadmaster Riviera Hardtop (76R-4737X) '1954 Produced in 20404 copies
• Buick Roadmaster Riviera Sedan (72R-4719) '1954 Produced in 26862 copies