Introduced for the 2006 model year, this full-size Buick sedan marked the brand’s move into the modern mid-2000s large-car market, replacing the long-running LeSabre and Park Avenue in Buick’s North American lineup. It adopted a more contemporary, formal four-door shape while keeping the quiet, comfort-focused character that had long defined Buick’s traditional sedan offerings. The nameplate was used on a single continuous production run and was discontinued after the 2011 model year.
The car was positioned as Buick’s flagship sedan in the United States during its run, aimed at buyers who wanted a roomy, smooth-riding alternative to more aggressively styled luxury cars. Early examples emphasized a broad grille, conservative proportions, and an upscale interior, while later updates refined equipment and appearance without changing the basic mission. Across its life, the model was offered in both V6 and V8 configurations depending on trim and model year, and it was closely associated with Buick’s emphasis on comfort, insulation, and long-distance cruising.
Historically, the model is notable as one of the last true American full-size Buick sedans before the brand shifted its focus more heavily toward crossovers and more globally oriented cars. Its final model year was 2011, after which it disappeared from the lineup and was not revived as a later separate production series.