Edmunds Follow-Up Test - 2006 Cadillac STS-V

Discussion in 'OT Driven' started by TriShield, Jan 17, 2006.

  1. TriShield

    TriShield Super Moderator® Super Moderator

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    Cadzilla

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    Cadillac is boasting that it developed the STS-V on racetracks and proving grounds all over the world, including the legendary Nürburgring in Germany.

    By Scott Oldham
    Date posted: 01-16-2006

    It takes a serious set of stones to go after the BMW M5 and the Mercedes-Benz E55 AMG. The two have been the undisputed kings of four-door performance for nearly two decades. Challenging them is like picking a fight with Clubber Lang and Drago at the same time, and even Rocky wasn't punchy enough to do that.

    Well, it turns out Cadillac has grown a pair worthy of Easter Island. The 2006 Cadillac STS-V is a high-performance version of the rear-wheel-drive STS, created with the sole intention of taking on the legendary German super sedans. And it just might have what it takes.

    Big power

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    Although the STS-V is built on the same assembly line as the standard STS, its engine is built by a single technician in about 4 hours. Too bad it's hidden under that big plastic engine cover.

    Engineered by GM's Performance Division, the same bunch that cooked up the killer Chevy Trailblazer SS, the STS-V is not only the first production Cadillac ever to be supercharged, but with 469 horsepower, it's the most powerful production Cadillac ever.

    Under the hood is a 4.4-liter interpretation of Caddy's familiar all-aluminum Northstar V8, which features double-overhead cams, 32 valves and variable valve timing. In STS-V spec, the engine is topped by a Roots-type supercharger making 10-12 pounds of boost and four tubular water-to-air intercoolers that look like foot-long metallic sausages. Cadillac calls it the Northstar V8 SC (supercharged) and considers it to be a clean-sheet engine.

    "We didn't just bolt a supercharger to a Northstar," says John M. Barrick, the engineering manager for Cadillac's Performance Series of cars. "It's based on the Northstar, but over half the parts are new."

    Those new parts include a stronger engine block, new cylinder heads, a lower compression ratio, and the most powerful engine control module ever used by GM. The combination is good for 469 hp at 6,400 rpm and 439 lb-ft of torque at 3,600 rpm, which means the 4.4-liter Northstar SC makes more than 100 horsepower per liter.

    Impressive for sure, but we still can't help but be a little disappointed. We can't help but wonder, "What if?" As in, what if the Northstar SC displaced the same 4.6 liters as its normally aspirated counterpart?

    Answer: It would make even more power.

    But it isn't, and it doesn't. Instead, it's smaller in an attempt to strike a better balance between fuel consumption and the radical increases in power. And it worked, but not enough to make the STS-V the mileage leader in its class. Meanwhile, that drop in displacement assured it wouldn't wear the power crown, either.

    Zero to 60 mph in less than 5 seconds, sort of

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    The ducts under the foglamps direct air to the front brakes for cooling.

    It sure sounds good, though, delivering a harmonic blend of blower whine and V8 rumble, which only intensifies as the tach needle climbs. Torquey, too. With a great big wall of the stuff right off idle. If it weren't for the hard-core fuel cutoff at 6,700 rpm, it feels like the big V8 would just keep pulling.

    Cadillac claims the STS-V accelerates from zero to 60 mph in less than 5 seconds. And it does, sort of.

    The first time we tested the STS-V, we recorded a best run of 5.1 seconds. So we called the guys at GM to tell them their car doesn't accelerate from 0-60 mph in less than 5 seconds. Figuring there must be something wrong with the car, General Motors sent a powertrain engineer from Detroit to check it out. The car was fine. But he did notice we didn't use any roll-out in our acceleration tests, which GM and many car magazines do.

    Roll-out essentially gives the car 12 inches of movement before you start the clocks. You know, a head start. So we humored the guy, recalculated our radar gun and made a few more runs. Sure enough, with 12 inches of roll-out, the car's best 0-60-mph run was 4.9 seconds. Too bad we don't test with roll-out. Our 0-60-mph test starts at zero mph. So our official 0-60-mph time for the STS-V is 5.1 seconds.

    With that settled, we made a few quarter-mile passes, and clicked off a best of 13.6 seconds at 106.2 mph, which makes it the quickest Caddy we've ever tested, but not the quickest car in its class. The last E55 wagon we tested hit 60 mph in 4.9 seconds and finished the quarter-mile in 13.1 seconds at 112 mph. We haven't run a 2006 M5 through our instrumented testing yet.

    Odd thing is the STS-V feels even faster than it is. It rockets off the line and gathers speed like it has fallen off a building. The weak link in its acceleration equation seems to be its six-speed transmission, which shifts slower than we would like. There is a manual mode for self-shifting, which we always appreciate, but it seems to take a year before the transmission grabs the gear you've asked it for.

    On the plus side, the six-speed is very attentive around town and on the highway, where it responds to throttle inputs quickly and accurately.

    Shockingly smooth, surprisingly agile

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    Although the front suspension has been lowered, the rear suspension has not, which gives the STS-V a slightly raked stance.

    And it's the highway where the STS-V is most at home. Despite a retuned suspension, with 15-percent higher spring rates and 12-percent higher damping rates than a standard STS, the STS-V hums down the highway like the luxury sedan that it is. It's the kind of car you pack with three of your rowdiest hell-raiser buddies for a late-night banzai run to Atlantic City. Trump Taj Mahal, here we come.

    It also handles like a car half its size. This 4,300-pound sedan is actually flickable. Although the STS-V is softly sprung compared to the M5, body roll is well controlled, and the big Caddy never feels floppy or sloppy. And as it should be, power oversteer is just a throttle stab away.

    Feedback is spot-on. Although the speed-sensitive, variable-effort power steering is a little overboosted turning into slow corners, it's perfect in the faster stuff. Cadillac developed the STS-V on racetracks and proving grounds all over the world, including the legendary Nürburgring in Germany, and it shows in the car's high-speed stability. The STS-V is perfectly balanced in quick transitions. In our slalom test, it managed a very impressive 65.2 mph through the cones, which is 5 mph better than the Mercedes.

    The "Ring" is also hell on brakes, which is why the STS-V has an awesome set. Brembos front and back, with four-piston calipers and huge 14-inch front and 14.3-inch rear rotors. They haul this big, heavy sedan to a stop from 60 mph in just 122.4 feet. Fade is simply a nonissue, and pedal feel is very good.

    Big price

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    If you have to gas up, there are worse places than this architecturally interesting 76 station in Beverly Hills, California. And the STS-V will have to gas up frequently. We averaged 11.4 mpg during our week with the car.

    That kind of performance never comes cheap, and the STS-V's $77,090 sticker price makes it the most expensive Cadillac to ever reach the road. For now, that is. The title will transfer to the $100,000 XLR-V when it hits dealers soon enough.

    That price, which includes a $2,100 gas-guzzler tax, also makes the STS-V about $5 grand cheaper than an M5 or an E55. Although the Caddy lacks some of the gadgetry and features found in the German sedans — things like the M5's clutchless manual transmission and the E55's adjustable suspension — everything you really need is standard on the STS-V. In fact, the car only comes one way, loaded. Standard equipment includes stability control, a sunroof (which can be deleted), DVD navigation system and XM Satellite Radio.

    Caddy only plans to build between 1,000 and 2,000 STS-Vs a year. You can spot them by their larger, stainless-steel wire-mesh front grille, which Cadillac says increases airflow 34 percent to help cool the engine. The model also gets a prominent front splitter, a domed hood to clear the engine's supercharger and a larger rear spoiler, which looks a little glued-on for our tastes. The 10-spoke wheels, which measure 18 inches in the front and 19 inches in the rear, are also unique to the STS-V. It's all very tasteful without being boring, and Caddy says the splitter and spoiler have an aerodynamic benefit.

    Inside, Cadillac leather-lined the standard STS interior and added some suede inserts on the standard STS seats. It's a nice touch and goes well with the Olive Ash Burl wood and aluminum trim, but the headliner is still crude mousehair. At this price point, it should also be suede.

    World-class Caddy

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    You can spot an STS-V by its larger, stainless-steel wire-mesh front grille, which Cadillac says increases airflow 34 percent to help cool the engine. The model also gets a prominent front splitter and a domed hood to clear the engine's supercharger.

    According the Barrick, the 2006 Cadillac STS-V is about refined performance. He says the goal was to build a smooth, refined and quiet car that was a blast to drive and track-ready. And that's exactly what the STS-V is. It may not be the fastest sedan in the world, but it is the most luxurious, best performing and best built Cadillac ever. It's also further proof that good things happen when a car company grows a pair.

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    At $77,090, the STS-V is the most expensive Cadillac to ever reach the road. For now that is. The title will transfer to the $100,000 XLR-V when it hits dealers soon enough.

    What Works:
    Wicked acceleration, very responsive handling, feels light on its feet, good ride quality, comfy seats.

    What Needs Work:
    Transmission feels sluggish and doesn't match revs on downshifts, fit and finish still behind competition, steering overboosted at low speeds, we can live without the rear spoiler.

    Bottom Line:
    Easily the best Cadillac ever, but still not the best in its class.


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  2. TriShield

    TriShield Super Moderator® Super Moderator

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    Absolutely love the car, but hate the three colors they offer it in right now. It begs to be red.
     
  3. aww nigga

    aww nigga Active Member

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    So...cliffs= M5 is better in all ways, and the STS-V isn't even on the same performance level as an E46 M3?
     
  4. Noah

    Noah The things we know best are the things we haven't OT Supporter

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    Meh....

    Jaguar S-Type R > That
     
  5. TriShield

    TriShield Super Moderator® Super Moderator

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    Not really. The V doesn't induce me to vomiting when I look at it. I also don't have to press twenty different buttons and fiddle with a mouse on the console before driving it.
     
  6. OPM Inc.

    OPM Inc. OT Supporter

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    Seems nice but not 77k nice. :dunno:
     
  7. aww nigga

    aww nigga Active Member

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    :ugh:


    edit- The :ugh: only applies if you think that the STS is superior in any way other than looks which are subjective
     
  8. TriShield

    TriShield Super Moderator® Super Moderator

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    So it's not a fact that i-Drive isn't a completely nonintuitive and distracting pile of shit interface? And it's not questionable that the "ultimate driving machine" has a million needless buttons for every whim like an old Pontiac SSEi?

    Actually come to think of it I think the V is likely a better cruiser too. Not everyone wants an overpriced and overwrought machine because it has a roundel on the hood.
     
  9. you know me

    you know me OT where the douchbags play

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    I'd own that before any other vehicle mentioned in this thread
     
  10. Steve Kerr

    Steve Kerr 6 Time NBA Champion OT Supporter

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    Lemme wrap this up really quick...

    Heavy, ugly, big motor.

    /thread.
     
  11. TriShield

    TriShield Super Moderator® Super Moderator

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    :werd:

    But will anyone be tuning this latest Northstar? I want to see what it does with more boost and a recalibrated tranny.
     
  12. you know me

    you know me OT where the douchbags play

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    I don't see why not. Callaway did the old SS Impalla, LPE will mod just about anything....MTI will I bet, I forsee Mallett doing one, toss some money at the Vette Docs and they may....they are some fucking crazy guys
     
  13. aww nigga

    aww nigga Active Member

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    Overpriced? It's not much more than your beloved V, and destroys it in all measurable categories.

    http://www.m5board.com/articles.php?id=34&page=3
     
  14. TriShield

    TriShield Super Moderator® Super Moderator

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    I was unaware large cars were featherweight (each car in this class is over 4,000lbs) and 4.4 litres isn't anywhere close to massive displacement.

    Cliffs - You are wrong.

    /yourself
     
  15. zanadu

    zanadu OT Supporter

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    That's a pretty cool sedan. Too bad there is no true manual though.
     
  16. you know me

    you know me OT where the douchbags play

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  17. you know me

    you know me OT where the douchbags play

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    I'd love to see them use the 5.7L and blow it...
     
  18. wheatyj

    wheatyj New Member

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    I can't wait till the XLR-V comes out
     
  19. TriShield

    TriShield Super Moderator® Super Moderator

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    Sure, all those settings and i-Drive aggravation will be splendid on my daily commute, as will the handling limits I (and you) will never use.

    If you were talking about the E39 I would be inclined to agree with you, however you are referring to the teutonic Pontiac Grand Prix GTP with a nice V10 under the hood.

    Again, I'd rather have the V the slog and track. Just the sight of the new M5 alone is enough to discourage me from ever owning one.
     
  20. aww nigga

    aww nigga Active Member

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    Agree to disagree :fawk:
     
  21. TripleFive

    TripleFive Someone Sell Me A Porsche! OT Supporter

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    You forgot...

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  22. TriShield

    TriShield Super Moderator® Super Moderator

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    [​IMG]

    Did someone say manual?
     
  23. TriShield

    TriShield Super Moderator® Super Moderator

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    :bigok:
     
  24. LarryZ

    LarryZ i love sticky rice

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    i will pay $5grand more for a m5 :o
     
  25. Tex lex

    Tex lex New Member

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    the m5 is a 100,000
     

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