The Buick Regal is an upscale mid-size car that was first introduced by Buick for the 1973 model year. North American production ended in 2004 and began again in 2011. For the 2011 model year, Buick re-introduced the Regal to the North American market, positioned as an upscale sport sedan. Production and sales in China have continued since 1999.
For certain model years between 1973 and 2004, the Regal shared bodies and powertrains with the similar Buick Century. The current model (2011–present) is a badge-engineered version of the Opel Insignia, known as the Vauxhall Insignia in the UK.