2012 Buick Regal eAssist – Price, Photos, Features, Specifications & Launch     MSRP                    $26,670 – $34,450 Invoice              $25,603 – $33,072 The 2012 Regal is a 4-door, 5-passenger sports sedan, available in 7 trims, ranging from the Base to the GS. Upon introduction, the Base is equipped with a standard 2.4-liter, I4, 182-horsepower engine. A [...]