The 2006 Buick LaCrosse is an American full-sized sedan from General Motors under their luxury brand. It debuted as the replacement for the Century and Regal in Buick's lineup. Available in three trims: CX, CXL, and CXS, each equipped with different engine options. The base level CX has a 3.8L V6 that boasts 201 horsepower, while the top-tier CXS enjoys a 3.6L V6 rated at 240 hp. Both engines pair with a smooth four-speed automatic transmission. A highlight includes QuietTuning, a technology introduced by Buick for this model year to reduce cabin noise. All models feature standard safety options including ABS, traction control, and dual front-side-mounted airbags. Despite its age, the car has rudimentary tech features like remote keyless power door locks and a six-speaker sound system.