2006 Cadillac STS-V Sedan Review | Edmunds.com

2006 Cadillac STS-V Sedan

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Certified Pre-Owned (CPO) is a category of used car. Often late-model vehicles, they have been inspected, refurbished, if necessary, and are under warranty by the manufacturer.
Cadillac STS-V Features and Specs

Features & Specs

  • Engine 4.4 L V 8-cylinder
  • Drivetrain Rear Wheel Drive
  • Transmission 6-speed Automatic
  • Horse Power 469 hp @ 6400 rpm
  • Fuel Economy 12/19 mpg
  • Bluetooth Yes
  • Navigation Yes
  • Heated Seats Yes

Review of the 2006 Cadillac STS-V

  • The 2006 Cadillac STS-V stakes out a strong claim on turf normally dominated by ace German sport sedans.

  • Safety
  • Pros

    Hugely powerful supercharged V8, nimble handling for its size, all of the STS's luxury features come standard.

  • Cons

    Plastic interior panels not quite up to German standards, only one transmission available, smallish trunk.

  • What's New for 2006

    Cadillac follows up last year's introduction of the STS luxury sport sedan with an STS-V performance variant in 2006. The STS-V features a supercharged V8, upgraded suspension and braking hardware, bigger wheels, aerodynamic enhancements and special interior trim.

Full 2006 Cadillac STS-V Review

What's New for 2006

Cadillac follows up last year's introduction of the STS luxury sport sedan with an STS-V performance variant in 2006. The STS-V features a supercharged V8, upgraded suspension and braking hardware, bigger wheels, aerodynamic enhancements and special interior trim.


It wasn't that long ago that Cadillac's lineup of cars was a motley collection of also-rans in the luxury car market. But matters have turned around nicely for GM's luxury division. Last year, for instance, it introduced the STS sedan, a replacement for the Seville that we think quite highly of. Now, Cadillac has switched on the afterburners and expanded its V-Series line of performance vehicles with the STS-V.

To create the STS-V, Cadillac started by installing an Eaton Roots-type supercharger to the top of its Northstar V8 to create the most powerful production Cadillac engine ever. OK, Caddy didn't just bolt the blower on. First its engineers redesigned every major component of the Northstar engine, reduced the engine's displacement from 4.6 liters to 4.4 liters and dialed back its compression ratio to a more boost-friendly 9.0 to 1. Then, they engineered and patented a unique induction system. The air enters the supercharger from the rear, passes through its spinning vanes from the bottom, is cooled by a top-mounted intercooler and then does a complete 180 before heading down the long runners of the intake manifold. It all fits neatly under the STS-V's bulging hood, makes 10-12 pounds of boost and cranks horsepower from 320 to a mouthwatering 469. According to Cadillac, the STS-V can tick off 60 mph in fewer than 5 seconds.

A six-speed automatic transmission with a manual sequential-shift feature transfers that power to the Cad's 19-inch six-lug rear wheels and fat Pirelli tires. The upsized Brembo brakes measure 14 inches in diameter in front and 14.3 inches in the rear. Small trim touches like aluminum accents on the steering wheel and instrument bezels are as radical as the Cadillac STS-V gets on the inside. Most of the STS's interior features come standard (as one would hope for about $75,000), and the seats have additional bolsters and suede inserts to hold you in place when you're driving immaturely. On the outside, there's no missing the tasteful metal mesh grilles, deeper front spoiler and a rear deck lid spoiler.

The STS-V is a serious performance machine and should be treated as such. True, it isn't an M5 beater. Pit it head-to-head on a mountain road and the STS-V wilts in the face of the M5's fiery and dynamic athleticism. But it outclasses the Jaguar S-Type R and makes for a very interesting alternative to the Mercedes E55 AMG. If you're eyeing a big-bore luxury sport sedan, the 2006 Cadillac STS-V is worth heavy consideration.

Body Styles, Trim Levels, and Options

The Cadillac STS-V is a performance variant of the regular V8-powered STS luxury sport sedan. Just about every feature offered on the STS is standard. Interior highlights include sport seats with perforated suede inserts, special wood and aluminum accents, a 15-speaker Bose audio system with surround sound and an in-dash six-CD changer, satellite radio, a DVD-based navigation system and a sunroof. HID headlights and rear parking assist are also included. The "V" part of this car's name means that it also comes with 18-inch wheels in front and 19s in back, oversized Brembo disc brakes, aerodynamic enhancements, a performance-tuned suspension, quicker steering and a limited-slip differential.

Powertrains and Performance

The heart of the Cadillac STS-V is a supercharged 4.4-liter V8. It produces 469 horsepower at 6,400 rpm and 439 lb-ft of torque at 3,800 rpm. Power is sent to the rear wheels through a six-speed automatic transmission that features manual-shift control. Expect a 0-to-60-mph time of fewer than 5 seconds.


The STS-V comes standard with ABS, stability control, traction control, seat-mounted side bags for front occupants and head curtain airbags for all outboard passengers. Neither the NHTSA nor the IIHS has crash tested the 2006 Cadillac STS-V.

Interior Design and Special Features

Cadillac has been putting extra effort into interior quality and design as part of its self-proclaimed renaissance, and it shows. Panel fit and finish is very good. A generous wheelbase measuring 116.4 inches, which is longer than most of its rivals, promises that the STS-V's backseat passengers will have plenty of room. Rear legroom trumps that found in the E-Class and even edges out the spacious LS 430. On the other hand, at 13.8 cubic feet, the STS-V's luggage capacity is merely adequate.

Driving Impressions

As you might expect, overtaking slow-moving cars or trucks requires little forethought. Just dip the throttle and go. Mash the pedal and the Cadillac STS-V bellows forth on a huge wave of supercharged torque. The car's rather large size does ultimately limit its ability to hustle through corners, but make no mistake -- this is not a lumpy Cadillac car of yore and is fully competent in matching or exceeding the skills of most drivers. The sport-tuned suspension, larger wheels and tires and big Brembo brakes all do their part to make this a very complete package.

What Others Are Saying

Customer Reviews

2006 cadillac sts

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Vehicle: 2006 Cadillac STS-V 4dr Sedan (4.4L 8cyl S/C 6A)

Costly car to maintain for sure. Looks pretty good on the outside. I like the steel blue color and wheels but feels cheap and plastic on the inside. Cadillac is not like the Cadillac I grew up with that my Mother always drove. Those cars really seemed to last and were comfortable. This car is not and maybe its because Im use to driving a Lexus and actually know what a quality car feels like. This car now has 105,000 miles and resale is AWFUL to say the least. It does however get the job done to and from work but NO TRIPS!! Don't trust it, feels to lose and its been taken care of is the sad part.

Don't bother w/ sts-v

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Vehicle: 2006 Cadillac STS-V 4dr Sedan (4.4L 8cyl S/C 6A)

The engine is fantastic. The Brembo brakes are the best I have ever owned. I have had M3s in the past and was looking for a sedan and got a good deal (or so I thought). The car has been the shop for 8 weeks in the first 16 months. Not just for small stuff either, but for items like the transmission shifting to 3rd gear at hwy speeds (that will get your attention and of those behind you). Power steering pump exploding and too many others to count. I have contacted Cadlliac numerous times and they refuse to help. For a $70+k car you would think that they would give some service consideration, but so far they have disappointed all along. So this will be my 1st and last Caddy.

Cadillac is back

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Vehicle: 2006 Cadillac STS-V 4dr Sedan (4.4L 8cyl S/C 6A)

First, the gentleman who described the STS-V's handling as "sloppy" is way off. As a driver of stock cars, open wheel racers and, currently, shifter karts, I assure you that the STS-V has enough handling to accomplish any manuever that could sanely be attempted on public roads. This car is nicely placed 80% of the way between an M5 and a Jag R-type. It is a tad softer than the German cars, but that's more than acceptable to me--if I want to get beat up by a stiff ride, I might as well go to a race track and drive something really fast. This is the car that persuaded me to get rid of my old BMW 750. No 5 series or E class car was able to do that.


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Vehicle: 2006 Cadillac STS-V 4dr Sedan (4.4L 8cyl S/C 6A)

The 2006 Cadillac STS-V has an excellent interior and comfort. Tihs car has a powerful engine that pulls hard. Its overall fit and finish is well done.

Compared the sts-v / m5

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Vehicle: 2006 Cadillac STS-V 4dr Sedan (4.4L 8cyl S/C 6A)

Having owned a BMW M5 (2001) and a BMW M3 I wanted more of an every day driver, but stillbe able to enjoy great performance, handling, acceleration, and stopping power.The STS-VV, E55 and M5 are all great cars, but different. So far I am totaly impressed with the STS-V and am happy with my choice. My wife, who drives a BMW 740i sport and would never drive an M5 or E55, loves the STS-V.

Traded a8l - wanted performance!

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Vehicle: 2006 Cadillac STS-V 4dr Sedan (4.4L 8cyl S/C 6A)

I could not accept the trade-in offer from the local Audi dealer. He told me to keep my old A8L which kept needing transmission recalibrations. Plus it did not have fancy options like Blue Tooth etc. The Caddie runs better, it is quieter, and smoother. I hate the Pirelli Tires though. They are harsh and provide a noisy ride. I will buy Michelins when they are available in this size. I like the interior! The leather is just as good as in the Audi. I also like the navigation and other features that the Germans still do not have. The car is smaller, but rides just as well as the Audi. It is not quite as solid at very high speed, but I don't really need to drive at 130 MPH.

Talk About The 2006 STS-V

2006 Cadillac STS-V Discussions See all Started By

2004-'07 Cadillac CTS-V Recalled for Potential Overheating in Fuel Pump Modules | Edmunds.com General Motors is recalling 10,005 2004-'07 Cadillac CTS-V and 2006-'07 Cadillac STS-V sedans in the U.S. ...

At no point in this exchange have I said that the STS-v outperforms an M5. What I have said is that the STS-v is a more multi-dimensional formula that puts the compromise between driver & passenge...

1 – When is ‘eventually’ going to arrive? I expect that this depends to some degree on how this trans. holds up behind the S/C STS-v motor....

Gas Mileage


  • 12
  • cty
  • 19
  • highway
Calculate Yearly Fuel Costs
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