The 2009 Buick LaCrosse midsize family sedan offers a variety of new refinements including heated outside rearview mirrors and Bluetooth connectivity. Powered by a base 3.8L V6 engine that produces 200 hp and 230 lb-ft of torque, the front-wheel drive Buick LaCross is equipped with a four-speed automatic transmission. Fuel-economy mileage ratings are 17 mpg city/28 mpg hwy.