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

Cadillac STS Models

2011 Cadillac STS trims

2011 STS

A full-size luxury sports sedan, the 2011 Cadillac STS is stacked with features, making it a rare blend of comfort, performance, and style.

2010 Cadillac STS trims

2010 STS

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.

2009 Cadillac STS trims

2009 STS

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.

2008 Cadillac STS trims

2008 STS

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.

2007 Cadillac STS trims

2007 STS

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.

2006 Cadillac STS trims

2006 STS

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.

2005 Cadillac STS trims

2005 STS

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.

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About STS

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.