866-593-1568 Your kind of luxury means being able to choose the 2012 Buick Regal that's right for you. The standard 2.4L ECOTEC VVT 4-Cylinder engine delivers sport-injected performance along with the precise, agile handling that has made the 2012 Buick Regal luxury sport sedan a favorite of owners and experts alike. Three additional engine choices give you the option to focus on what matters most to you - be it pulse-quickening performance, extraordinary efficiency, or combination of both.