The LaCrosse made its debut in 2005, so there are only minor updates for 2007. A significant new addition is a tire-pressure-monitoring system, now standard on all trim levels. There’s a new Harvest Burl interior wood trim choice, and vehicles equipped with cloth upholstery can now enjoy available heated driver and passenger seats. There’s also new gray or neutral cloth seat fabric on the CX trim, while the CXS gets two new 17-inch wheel designs. CXL models offer a 17-inch, 10-spoke Chrometech flangeless wheel option. New exterior colors include Midnight Blue Metallic, Stone Gray Metallic, Midnight Amethyst Metallic, and Red Jewel Tintcoat.

The Buick brand continues to move forward with only two sedans, one of which is the LaCrosse. The midsize sedan comes in three trim levels: CX, CXS, and CXL. The first two employ a 3.8-liter V-6 engine with 200 hp and 230 lb.-ft. of torque. The high-end CXL gets a smaller-displacement 3.6-liter engine but features Variable Valve Technology, which gives it a boost in output to 240 hp and 225 lb.-ft. of torque. Both engines are matched to a 4-speed automatic transmission. The LaCrosse is one of the few remaining car models that offers bench or bucket front seats for 5- or 6-passenger seating. While the CXL leans toward luxury, the CXS goes for the sportier feel, with larger stabilizer bars and a suspension tuned for firmer ride and handling.