DTS replaced Cadillac's long-lived DeVille for 2006, as a restyled update of the company's largest sedan. Continuing a basic front-wheel-drive design, the DTS had a 4.6-liter V8, four-speed automatic transmission, and self-leveling rear suspension. Dimensions were little changed from the prior DeVille. The new DTS came with a standard 275-horsepower Northstar V8 engine. A Performance Package option raised engine output to 291 horsepower, accompanied by a firmer suspension with auto-adjusting shock absorbers, and 18-inch wheels instead of the usual 17s. With its DTS, Cadillac competed against such premium full-size sedans as the Buick Lucerne, Lexus LS 430, and Lincoln Town Car. Every DTS included antilock braking, traction control, front torso side airbags, and head-protecting curtain side airbags. Also standard were Magnetic Ride Control, a tire-pressure monitor, remote engine start feature, xenon headlights, GM OnStar assistance, and leather upholstery. The in-dash six-CD changer included an MP3 provision. Cadillac claimed the dual-depth front passenger airbags was an industry "first." Styling followed Cadillac's traditional cues, including vertical headlights and taillights, and an eggcrate grille. An available front bench seat could increase passenger capacity from five to six. Additional options included an antiskid system, front-rear obstacle detection, navigation system, satellite radio, and cruise control designed to maintain a set following distance. Also available were heated/cooled front seats and a heated steering wheel.