The Buick Regal is an upscale mid-sized car that was first introduced by Buick for the 1973 model year. The model was originally positioned as a personal luxury car, and typically offered in both coupe and sedan forms until 1997, when the Regal became sedan-only due to the decline of the personal luxury coupe market. For certain model years between 1973 and 2004, the Regal shared bodies and powertrains with the similar Buick Century, although the Regal was positioned as a more upmarket vehicle.