Buick Regal GS

The Buick Regal is a mid-size car introduced by General Motors for the 1973 model year. North American production ended in 2004 and began again in 2011. For the 2011 model year, Buick re-introduced the Regal to the North American market, positioned as an upscale sport sedan. Production and sales in China have continued since 1999.For certain model years between 1973 and 2004, the Regal shared bodies and powertrains with the similar Buick Century.

Chinese market Buick Regal

Beginning in the 2012 model year, Buick will offer a mild hybrid system in the Regal, called "eAssist". The Regal will be the second GM vehicle to offer eAssist after the 2012 Buick LaCrosse. eAssist is standard in the LaCrosse, but the eAssist powertrain will be optional in the Regal.The eAssist system adds a lithium-ion battery housed in the trunk, along with regenerative braking, engine stop/start, fuel cut-off, grille louvres that close at speed, underbody panels and low-rolling resistance tires. The eAssist system adds up to 15 hp (11 kW) to the standard 2.4L Ecotec engine during acceleration. Fuel economy for the Regal with eAssist is estimated at 26 mpg_-US (9.0 L/100 km; 31 mpg_-imp) city, 37 mpg_-US (6.4 L/100 km; 44 mpg_-imp) highway. 

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