Cadillac STS

Although it was introduced in 2005, the Cadillac STS can in fact trace its vehicular lineage all the way back to Seville hardtop coupe from the 1950s. During its time the former STS was among the flashiest, speediest, and most luxurious cars of its era. Over the ensuing decades, the Seville evolved into a number of different models, eventually emerging as the modern Cadillac STS luxury sedan. The STS was introduced as the successor to the Seville, which was discontinued in 2004. The STS performed well on the road and in the automotive market for a time. However, due to flagging sales and in part to the success of the sportier and more compact CTS, the STS cars were discontinued in 2011.

More on the Cadillac STS
About the Cadillac STS Known

The STS or Seville Touring Sedan is a midsize luxury sports sedan that’s based on GM’s Sigma rear and all-wheel drive platform. More powerful than most luxury sedans but with all the spaciousness and amenities you’d expect in an executive car, the Cadillac STS is a reasonably-priced alternative to many of the top-of-the-line luxury sport sedans put out by German and Swiss automakers.

The STS played a pivotal role in helping Cadillac shake off its staid reputation as a maker of grandiose, behemoth luxury cars, while rebranding itself as a more youthful producer of vehicles that offered the power of muscle cars coupled with the elegance of European luxury sedans.

While it may have only been produced for six years, the STS garnered a reputation for strong overall performance, good safety features, stability on the road, and an impressive array of tech options and amenities.

Cadillac STS Features

The final model year for the Cadillac STS was in 2011. While earlier models had offered the option of a 4.6-liter V-8 engine and all-wheel drive, for 2011, those options were discontinued, as were other features like adaptive steering, adaptive damping, Magnetic Ride Control, and four-wheel active steering. Instead, the 2011 Cadillac STS was only made available with rear-wheel drive and a direct-injected 2.6-liter DOHC V-6. Still, while it may not be on the same level as the 320 horsepower V-8, the STS was previously available with, the 2011 STS’s V-6 was capable of producing 305 horsepower and 272 lb-ft of torque. That coupled with the car’s smooth, responsive six-speed automatic transmission ultimately resulted in a driving experience that was purported to be pleasant and relaxed, if not exactly thrilling. In terms of fuel economy, the 2011 STS offered a respectable 18/27 mpg city/highway.

The 2011 STS maintains the model’s reputation for offering good safety features with front side and side-curtain airbags, and a free year of OnStar emergency assistance service. Top trim models also offered the options of accident avoidance safety systems such as a Side Blind Spot Zone Alert system and a Lane Departure Warning system.

For 2011, Cadillac made the STS available in three trim levels: V-6 Luxury Sport, V-6 Luxury, and V-6 Premium. Certain features were made standard across all models including leather-upholstered seats, dual-zone climate control, OnStar, and a Bose sound system. Additional amenities included in the V-6 Luxury trim level were Bluetooth capabilities, heated front and rear seats, and windshield wipers with rain-sensing capabilities. Features included in the V-6 Premium trim level included 18-inch wheels, improved braking and steering systems, auto-dimming xenon headlamps, and better audio and navigation systems.

There is also a special Platinum Edition package that includes Olive Ash interior wood trim, improved leather, and Alcantara interior, and performance tires. Several of the options packages also offer a head-up display that projects certain gauge readings into the lower portion of the windscreen.

Cadillac STS Evolution

Prior to 2011, the STS were always available in both 255 horsepower V-6 versions and 320 horsepower V-8 versions. Only the V-8 version was available with AWD when the car was first introduced in 2005. However, starting in 2006, the V-6 version was also made available with AWD. It wasn't until 2007 when the STS saw the introduction of a six-speed automatic transmission for the V-8 version.

In 2008, styling for the STS was refreshed and chrome fender vents were added in addition to an interior that featured more luxurious trim. In that same year, the V-6 was matched up with a smooth-shifting six-speed transmission that was featured in the final production years of the model. 2010 meanwhile, was the final year that the Cadillac STS was made available with a V-8 engine.

While it is technically not an STS, the fifth generation of the Cadillac Seville that was produced between 1998 and 2003 could also be regarded as a past version of the STS. The performance package version of that generation of the Seville was, in fact, known as the STS version and featured much in common with early models of the Cadillac STS.

Select a Cadillac STS Year

2011 Cadillac STS

Luxury, Sedan


Not much. The outdated V-8 engine has been dropped for 2011 and that’s it. Otherwise, the STS carries on with the same dated styling inside and out. Though more competitive than the DTS, the STS remains in a holding pattern likes its older sibling, both waiting to be replaced by the new XTS flagship sedan.

ESTIMATED RESALE: $18,572

MPG
18-27
Seats
5

2010 Cadillac STS
ESTIMATED RESALE: $17,555

MPG
15-27
Seats
5

2009 Cadillac STS

Luxury, Sedan


The 2009 Cadillac STS is a full-size luxury sport sedan that offers either a V-6 or V-8 engine, as the trim levels share the name with its selected engine size.

ESTIMATED RESALE: $14,547

MPG
14-26
Seats
5

2008 Cadillac STS

Luxury, Sedan


The 2008 Cadillac STS classifies as a large luxury sport sedan available in two primary models, named for their engine types.

ESTIMATED RESALE: $12,664

MPG
14-26
Seats
5

2007 Cadillac STS

Luxury, Sedan


The 2007 Cadillac STS makes a clear and successful attempt to challenge the full-size European sport sedan supremacy.

ESTIMATED RESALE: $10,063

MPG
17-27
Seats
5

2006 Cadillac STS
ESTIMATED RESALE: $8,507

MPG
17-27
Seats
5

2005 Cadillac STS

Luxury, Sedan


The all-new, rear-drive 2005 Cadillac STS replaces the front-drive Seville.

ESTIMATED RESALE: $7,462

MPG
17-26
Seats
5

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