The automatic version of the GS returns an EPA-estimated fuel economy of 19 mpg city and 27 on the highway.
The new base model in the Regal's range combines the 2.4-liter four-cylinder engine with GM's eAssist micro-hybrid system that provides an electrical boost to aid the engine at low speeds and on inclines. According to Buick, the Regal with eAssist achieves an EPA-estimated 36 mpg highway.
Pricing and other details on the 2013 Regal will be released later this year.
































































































































































































