The 320-hp, 4.6-liter V8 has now been discontinued, as has the all-wheel drive option. And with the V8 goes adaptive steering, adaptive damping, Magnetic Ride Control, and 4-wheel active steering--all features that were offered only on the former top model. The high-performance STS-V model of previous years has also been discontinued.
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The STS had a thorough freshening in 2008, and the updates for 2010 include only two new paint colors: Vanilla Latte and Tuscan Bronze ChromaFlair.
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For 2009, Cadillac's STS and STS-V get mostly superficial changes following the 2008 refresh. Exterior colors Radiant Silver, Black Ice, and Blue Diamond Tricoat replace Blue Chip, Radiant Bronze, Light Platinum, and Sunset Blue. A speed limit notification has been added to navigation radio, and a Bluetooth interface is now available on non-navigation-equipped STS models. The Platinum Edition receives an alcantara ultra-microfiber headliner.
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For 2008, the Cadillac STS gets a much more powerful standard engine--a 302-horsepower, direct-injected V6--and a new six-speed automatic transmission standard across the model line. And making its debut for 2008 is a new STS Platinum Edition, which adds distinctive materials inside, with Tuscany leather and special chrome and wood accents. Two advanced-technology options, Lane Departure Warning Alert and Side Blind Zone Alert, help increase driver awareness and safety, and a head-up display and high-intensity discharge (HID) headlamps are now available on V6 models. Separately, the available Intellibeam headlamps switch between high and low beam as oncoming vehicles approach and pass. There's also a new Performance Handling Package, which adds an upgraded braking system, 18-inch alloy chrome-plated wheels, and summer performance tires, plus an active front steering feature on V8 AWD models. Flashy new polished aluminum 14-spoke, 18-inch wheels are also newly available. Otherwise there are a number of cosmetic changes, including new side marker lamps, a new grille and lower front fascia and intake, a new body-colored rear fascia, and polished aluminum exhaust tips.
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For 2007, the six-speed automatic transmission introduced last year on the high-performance Cadillac STS-V model is now standard on all V8 STS models, bringing improved acceleration yet more relaxed highway cruising.
SelectBrowse ListingsAs part of Cadillacs pattern for abandoning names in favor of three-letter codes, STS replaced the Seville nameplate as the brands the mid-range sedan representative for the 2005 model year. Using the Cadillac design language showcased on the CTS and SRX, the STS was a premium sedan with a strong emphasis on performance. Unlike its predecessor, the Cadillac STS was introduced with a standard rear-wheel drive layout or an optional all-wheel drivetrain. Two engines choices were presented on the 2005 STS consisting of a 255-horsepower 3.6-liter V-6 or a 320-horsepower 4.6-liter Northstar V-8. Both Cadillac engines shared the benefits of variable valve timing and were paired with five-speed automatic transmissions. Standard conveniences found on the 2005 Cadillac STS included leather seating, dual-zone climate control, ultrasonic rear parking assist and OnStar.
Front, side and curtain airbags, traction control, StabiliTrak as well as anti-lock disc braking was provided as safety protection. RainSense windshield wiper, Memory package, 15-speaker surround sound system and HID headlamps were optional equipment on the Cadillac STS. Available with an optional equipment group package on the V-8 model, Magnetic Ride Control provides quick-reacting handling characteristics. In 2006, the high-performance Cadillac STS-V model was added to the line-up. The transmission of the STS was upgraded to a six-speed gearbox for the 2007 model year while the 2008 Cadillac sedan included a new 302-horsepower, direct-injected 3.6-liter V-6 engine.
2008 also introduced the Platinum trim level consisting of 18-inch chrome wheels, semi-aniline leather interior and additional chrome accents. The V-8 engine was dropped from the Cadillac STS during the luxury vehicles final year of production in 2011. In 2012, the XTS replaced both the STS and the DTS.
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