Buick Lucerne I gallery (2005–2011)

The Buick Lucerne debuted at the 2005 Chicago Auto Show as the brand's flagship full-size sedan, serving as the direct replacement for both the Buick LeSabre and the Buick Park Avenue. Built on General Motors' front-wheel-drive G platform, which it shared with the contemporary Cadillac DTS, the Lucerne was offered exclusively as a traditional four-door sedan. At launch, the powertrain lineup consisted of a proven 3.8-liter 3800 Series III V6 producing 197 horsepower and a 4.6-liter Northstar V8 generating 275 horsepower, marking the first V8 in a Buick sedan since the 1996 Roadmaster. In 2008, Buick introduced the high-performance Super trim level featuring an upgraded 4.6-liter Northstar V8 rated at 292 horsepower alongside revised styling, larger wheels, and a recalibrated Magnetic Ride Control suspension system. For the 2009 model year, the aging 3.8-liter V6 was replaced by a more modern 3.9-liter LZ9 V6 yielding 227 horsepower. All engines were paired with four-speed automatic transmissions, specifically the 4T65-E for V6 variants and the heavy-duty 4T80-E for V8 configurations. Key highlights of the Lucerne included GM's QuietTuning acoustic package, StabiliTrak stability control, and a spacious, comfortable interior tailored primarily for the North American market, including the United States and Canada. Production ended in 2011.