The Century badge traces in Buick history to 1936, when the automaker first identified its products by easy-to-remember names rather than numbers. New Century editions of 2003 have a restyled front grille composed of graphite and chrome, new chrome moldings around side doors and body-colored fascia. Inside Century's cabin, new cloth upholstery is installed, as is more trim padding to strengthen the head-impact protection. An auxiliary side air bag, augmenting two standard frontal air bags, is a safety item available optionally on the two Century models, Custom and a luxury-tipped Limited. Century's enriched engine -- the 3100 series General Motors 3.1-liter plant with aluminum cylinder heads and sequential fuel injection -- registers 175 hp. Century's engine links to the GM 4T60E transmission with four forward gears and electronic controls. The cabin seats up to six due to a standard front bench split 55-45 percent in sections. Front seats slide fore and aft on extended tracks to create more legroom for tall passengers.