For the 2006 model year, Buick replaced its best-selling LeSabre and also the top-of-the-line Park Avenue with a brand-new Lucerne. Competing against the Chrysler 300, Mercury Montego, and Toyota Avalon, this front-wheel-drive full-size sedan was the first Buick to offer V8 power in more than a decade. Lucerne shared its basic architecture and V8 engine with the premium Cadillac DTS. Measuring 2-3 inches longer in wheelbase than its predecessor, the Lucerne split the difference in overall length, falling between the dimensions of its two forerunners. Front bucket seats with a center console permitted five-passenger capacity. CX and CXL models could replace the buckets with an available front bench that provided six-passenger seating. Four trim levels were offered: CX with a 197-horsepower V6, top-of-the-line CXS with a 275-hp V8, and midlevel CXL that came with either engine. All models used a four-speed automatic transmission. Antilock four-wheel disc brakes were standard. An antiskid system was standard on the CXS and optional for the CXL V8. Exclusively on CXS models, the antiskid system teamed with GM's Magnetic Ride Control, which was designed to adjust the ride to match road surfaces and driving conditions. All Lucernes contained head-protecting curtain side airbags and front torso side airbags. CX models rode on 16-inch wheels, while the CXL had 17s and the CXS 18-inchers. OnStar assistance was standard. Leather upholstery was standard in CXL and CXS models, but unavailable for the CX. Available features included remote engine start, heated and cooled front seats, rear park assist, and satellite radio.