Buick's mid-size sedan features a subdued yet sophisticated exterior fashioned from wedge-shaped forms, an interior that's generous in space and engineering assets that set up precise road manners. Two trim levels begin at base Regal LS with GM's 3800 Series II 3.8-liter V6 for 200 hp, but a sporty GS with supercharger kicks output to 240 hp. The interior pitches twin buckets up front (and, unlike other Buick sedans, there's no option for a front bench), with space for up to three on the back bench. New features range from interior trim padding for enhanced head-impact protection to two new exterior color choices: Cardinal Red Metallic and Augusta Green Metallic.