The benefit of this is plain to see, an increase in fuel-efficiency by 25 percent when compared to a standard four-cylinder gasoline engine. Powering the LaCrosse is a 2.4-liter EcoTech engine, which offers 37mph highway, something that will take some beating in this class.

The new mild hybrid system is to be called eAssist, and will use lithium-ion battery technology. Woodyard points out that this latest hybrid system shows that Buick is a brand on the up once more. Like other hybrids, when you come to a stop the engine will shut itself off, which as we know will save a huge amount on the amount of gas you use.

Do you think that the 2012 Buick LaCrosse with its eAssist system is something that normal luxury vehicle drivers will warm too? Seeing new vehicles like this shows just how determined General Motors are in rebuilding the GM brand, although recent recalls with Cadillac And Buick Models would not have helped their cause.

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