LaCrosse Leather Group, ECOTEC 2.4L I4 DGI DOHC, and Navigation System. Hybrid! Save the Planet! What a price for a 14! Buick has outdone itself with this outstanding 2014 Buick LaCrosse. It just doesn't get any better or more fuel-efficient. Climb into this gas-saving LaCrosse for a smooth ride with the kind of economy that puts a smile on your face.