Top 10 Most Powerful Cars Under $50,000 Published on November 11, 2022 in Top 10 by Nicolas Tardif Photo: Dominic Boucher 5. Cadillac CT4-V Price: $49,798 (2023) Engine: Turbocharged 2.7-litre four-cylinder, 325 hp, 380 lb-ft. More details about the Cadillac CT4-V.