The Buick Regal is a mid-size luxury sedan first introduced in 1973 by Buick, a division of General Motors. Over multiple generations, the Regal has evolved in design, size, and performance, transitioning from a muscle-car-inspired coupe to a modern, technologically advanced sedan. Known for its comfortable interior and smooth ride, the Regal has positioned itself as a premium choice in its category. The various generations reflect changes in automotive trends and consumer preferences, making it a notable model in Buick's lineup.