The Cadillac STS premiered for the 2005 model year as a sporty luxury sedan. Offered as both rear and all-wheel drive (AWD), the STS was designated by GM to succeed the Seville in the Cadillac lineup. At launch, the Cadillac STS was equipped with a base 3.6L V6 engine good for up to 255 horsepower. However, a bolder 4.4L V8 which pumped out 320 horsepower could also be had (and included AWD). Engines were mated to a five-speed automatic transmission. As for the model's dimensions, the Cadillac STS measured 116.4 inches in the wheelbase, 72.6 inches in width, 57.6 inches in height, and an overall length of 196.3 inches (196.7 inches as of 2008).
For 2007, the V8 engine configuration received an upgrade with advanced parts and a new six-speed automatic transmission, while AWD became offered with the V6. Since there were not a plethora of trim levels, the base Cadillac STS V6 was well-equipped with 17" wheels, eight-way power front-seats, dual-zone climate control, leather upholstery, a premium eight-speaker Bose sound system, remote keyless ignition, and OnStar navigation. V8 variants added seating-memory presets, heated seats, a heated steering wheel, wood trim, and rain-sensing windshield wipers. Additional features and accessories, such as adaptive cruise control, 18" wheels, and xenon HID headlights, could be obtained either as separate options or as part of one of several packages.
2008 welcomed in a redesign that saw the exterior of the STS receive a new front-end "egg crate" grille as well as a bevy of other changes to the styling and accessories, including an update to the interior. As for the undehood Cadillac STS parts, the base 3.6L V6 was boosted up to 302 horsepower and 272 pounds-per-foot of torque. The stronger (and optional) 3.6L V8 also saw an increase, rising to 320 horsepower along with 315 pounds-per-foot of torque. Both configurations were directed through a six-speed automatic transmission with rear or all-wheel drive. Safety features were updated for 2008, as well. The STS showed off antilock disc brakes, stability control, front-seat side airbags, full-length side-curtain airbags, a lane-departure warning system, a blind-zone alert system, active steering (which was offered for V8 versions), and other safety-enhancing parts and features. 2009 did not bring in too many changes to the model, although Bluetooth connectivity made its way into the STS lineup.
The Seville is one of Cadillac's most renowned achievements, and the STS carries that torch with renewed vigor. A precise, powerful luxury sedan, the STS is the modern-day answer to retro class and intrigue. The exterior is literally a canvas of custom artistry that permits one to get as creative as they please while the car's performance holds up well to any other model in its class. With so many imitations out there, it is sometimes easy to get confused. The STS shatters any remaining doubt about what a contemporary luxury model should look like.
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