Buick Regal eAssist

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 6-speed automatic transmission with overdrive is standard. The GS is equipped with a standard 2.0-liter, I4, 255-horsepower, turbo engine. A 6-speed manual transmission with overdrive is standard, and a 6-speed automatic transmission with overdrive is optional. Buick announced the 2012 Regal with eAssist™ fuel-saving technology, which improves overall fuel economy by 25 percent over the 2011 four-cylinder/six-speed powertrain. Estimated fuel economy is 26 mpg city and 37 mpg on the highway (pending EPA certification). Regal with eAssist joins the 2012 LaCrosse as the second Buick to feature the efficiency-enhancing technology. The system uses a state-of-the-art lithium-ion battery system, electric induction motor-generator and regenerative braking capability to improve fuel economy. Its fuel economy tops competitors such as the Acura TSX, rated at 22 mpg city and 31 mpg highway. Regal’s estimated 37 mpg on the highway is 20 percent greater and the TSX doesn’t offer a six-speed automatic transmission, which is standard on the Buick.