The debut of General Motors' eAssist technology at the Los Angeles Auto Show last year on the 2012 Buick LaCrosses was a bit hit. Not only did the automaker claim that this new fuel-saving feature would find its way quickly across many other models in its lineup. Now the 2011 Chicago Auto Show will see the eAssist-equipped 2012 Buick Regal too.
The big news is that the addition of said technology to the Regal's 2.4-liter inline-four powertrain means that the sedan is now capable of achieving 26 mpg in the city and 37 on the highway. The Regal eAssit will use a small 15-horsepower electric motor to give assistance during acceleration. When combined with regenerative braking and automatic start-stop, the result is a substantial increase in fuel economy. Unfortunately, unlike the LaCrosse, eAssist will not be the base powertrain for the 2012 Regal.