The Buick Regal is back unchanged for 2017. That means that this luxury sedan is equipped with a 182-horsepower, 2.4-litre four-cylinder engine or a 259-horsepower, turbocharged 2.0-litre turbo. The latter can be combined with either front-wheel or all-wheel drive, while the automatic gearbox is a six-speed. The unpopular manual transmission is no longer offered. The GS version is more exclusive in order to better challenge the Acura TLX, Ford Fusion Sport and Lexus IS.