Buick is a brand of automobile built in the United States, Canada, and China by General Motors Corporation. Buicks are sold in North America, China, Taiwan, and Israel. It is now GM's only US-based entry-level luxury brand since the demise of Oldsmobile in 2004, although GM's Swedish subsidiary, Saab, fills a similar segment in price and prestige level. GM leads all other automakers in Stategic Vision's Total Quality Index (TQI).

Source: Wikipedia