Cadillac STS Models and STS History

As 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.

New and Used STS Prices, Cadillac STS Model Years and History

A full-size luxury sports sedan, the 2011 Cadillac STS is stacked with features, making it a rare blend of comfort, performance, and style.
A full-size luxury sedan, the 2010 Cadillac STS has two performance oriented engines to choose from and a long list of impressive standard features.
For a relatively low-priced full-size luxury sport sedan, the 2009 Cadillac STS is a strong performer in terms of styling, powertrains and advanced safety options.
Available with a V6 or a V8 and with RWD or AWD, the 2008 Cadillac STS is a luxury sedan that has plenty of power yet retains that trademark smooth Cadillac ride.
Available with a V6 or V8, the 2007 Cadillac STS is a luxury sedan with seating for five passengers, and a new six-speed transmission for the V8 version.
A full-size luxury sedan with seating for five, the 2006 Cadillac STS adds AWD to the options list, and is available with either a V6 or V8 engine under the hood.
An all-new replacement for the DeVille, the 2005 Cadillac STS is a full-size RWD luxury sedan that is larger than the CTS and is available with a V6 or V8.