For the 2013 model year, Buick’s midsize sedan will no longer offer the base 2.4 liter four-cylinder engine as a standalone powerplant, replacing it with GM’s eAssist mild-hybrid system as standard equipment instead.
Optional on the 2012 Regal, eAssist uses a compact lithium-ion battery pack and a small electric motor to assist the engine at low speeds and on inclines, where fuel economy experiences the biggest drop. The system also features regenerative braking, engine start/stop, fuel cut-off, grille louvres that close at highway speeds, underbody panels, and low-rolling resistance tires. The result is a midsize sedan that achieves 26 MPG in the city and 36 MPG on the highway.
The 2013 Regal joins the larger LaCrosse in offering the eAssist system standard. The LaCrosse replaced the base 2.4 liter ECOTEC engine with the eAssist system for the 2012 model year.
Buick Regal Turbo and GS will continue as they are today, with pricing and on-sale date due to be announced later this year.
The GM Authority Take
Good stuff, Buick. Now, how about that true two-mode hybrid system?