Edmunds Full-Test & Video - Lexus IS-F

Discussion in 'OT Driven' started by TriShield, Oct 25, 2007.

  1. TriShield

    TriShield Super Moderator® Super Moderator

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    The Cure for Lexus Performance Anxiety

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    Our $59,990 base-price estimate is based on the $68,000 Neiman Marcus Edition that also includes air travel and deluxe accommodation for a Skip Barber driving course at Mazda Raceway at Laguna Seca.

    By Chris Walton, Chief Road Test Editor
    Date posted: 10-23-2007

    416-hp 5.0-liter V8 - 8-speed automatic transmission - Limited production of 200-300 per year

    Rather than shoehorning a 5.0-liter V8 into the nose of an IS 350 and simply calling it the IS 500, Lexus has instead cooked up a far more dedicated sport sedan with its new 2008 Lexus IS-F.

    According to Lexus, the "F" in Lexus IS-F is derived from Toyota's initial "Circle-F" designation of 20 years ago for what would become the Lexus brand itself. Circle-F later morphed into Flagship One or F1, which in turn became the internal code for the first Lexus car, the LS 400.

    Lexus is using this convoluted pedigree to help explain the importance it attaches to the IS-F. It promises that this and subsequent F-type cars will give Lexus real performance credentials, and it hopes that the F sub-brand will become as synonymous with performance as BMW's M Division and Mercedes-Benz AMG.

    Frankly, we would've been just as satisfied with a simple "IS 500" badge and far more subtle exterior styling. But from now on, it's all about the F-word.

    F Is for Fury

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    Yes, stability and traction control are fully defeatable. Note the IS-F-exclusive larger upper/lower grilles and gaping brake-cooling ducts adjacent to the standard foglamps.

    Regardless of what it means to the luxury carmaker (and how it appears to the serious sport-sedan buyer), the 2008 Lexus IS-F is a serious piece of highly engineered hardware indeed. At its heart, the 5.0-liter V8 (2UR-GSE) comes from a stroked version of the 4.6-liter engine (1UR-FSE) found in the luxo-cruising Lexus LS 460. Now that Yamaha (a frequent collaborator with Toyota for engine projects) has had its way with it, an essentially all-new engine pumps out an impressive 416 horsepower at 6,600 rpm with 371 pound-feet of torque available at 5,200 rpm.

    Exclusive to this Lexus V8 are trick cylinder heads with solid lifters and titanium intake valves, plus a water-cooled oil radiator. There's also an oil-scavenge pumping system that keeps the engine supplied with life-sustaining lubricant even in high-G cornering, and even the fuel tank uses an offset pump in a sub-tank for the same reasons.

    The engine's lightweight reciprocating mass (said to be half that of other UR engines) combines with variable valve timing to produce a lofty redline of 6,800 rpm.

    There's an instantly recognizable pubescent change in the IS-F's voice at 3,600 rpm when the dual-path intake system opens the secondary plumbing (located in the right wheelwell), immersing the passengers in a furious symphony of eight-cylinder baritone.

    When you pour the 5.0-liter V8's power through the highly modified eight-speed automatic transmission (from the LS 460), the 3,780-pound IS-F is good for a 4.8-second time to 60 mph on the way to a quarter-mile in 13.2 seconds at 109 mph, and it's still accelerating hard — very hard.

    The Competition

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    We had hoped the showcar's lowered suspension was just for show, but discovered the short-travel suspension was production correct.

    Frankly, we expected even better performance from such a good power-to-weight ratio. In our testing, the IS 350 has run to 60 mph in 5.2 seconds and done the quarter-mile in 13.8 seconds at 101.2 mph. Meanwhile, the BMW 335i sedan with an automatic clocks 60 mph in 4.9 seconds and the quarter-mile in 13.4 seconds at 103.9 mph.

    And when it comes to BMW's official performance estimates for the 2008 BMW M3 sedan with its 414-hp 4.0-liter V8, the benchmark of 60 mph is supposed to come up in 4.9 seconds. The same stat for the 2008 Mercedes-Benz C63 AMG with its 457-hp, 6.2-liter V8 is less than 4.5 seconds.

    We admit we might've left a tenth or two on the IS-F's table, however. As much as we feel that Michelin Pilot PS2 tires are like sticky Lucky Charms, the IS-F's 255mm-wide rear contact patches aren't wide enough to duplicate a magically delicious launch.

    That said, the roar of the rev-happy V8 is one of the most lust-worthy we've heard, rivaling the thrilling sound of the 4.2-liter V8 in the Audi RS 4
    , which also sounds like a flat-bottom drag-racing boat powered by a small-block V8 with open headers.

    F Is for Fuji

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    The IS-F's track-bred suspension provides an amazingly crisp turn-in and near-zero yaw delay with almost no body roll.

    Though if drag racing isn't quite the IS-F's sort of environment, road racing is. Besides the four other racetracks where camouflaged IS-F mules spent much of their time during testing, the car primarily was developed on Toyota's own Fuji International Speedway. A nice thing, if you can afford it.

    What this did for the IS-F is readily evident in the car's ability to hold a line in the corners, the linearity and tractability of the engine's power, and the magnificent proficiency of the transmission's shift action in manual mode.

    The brakes are also track-worthy. The fixed Brembo six-piston front calipers feature three different piston diameters and clamp 14.2-inch drilled and vented discs, while two-piston rear calipers squeeze 13.6-inch drilled and vented discs in the back. Sixty-to-zero stopping distances tumbled down with each successive stop with a best of 112 feet. We tired before these fade-resistant brakes did.

    Thank You for Smoking

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    Imagine our surprise when we discovered the exhaust tips were part of the fascia and not the muffler! Hey, that'd be a good place to warm up four McMuffins.

    We had a few laps at a local track and can tell the IS-F is no stranger to an apex. We tried all three modes of stability/traction control and found Sport VDIM mode largely unobtrusive. It's pretty permissive and becomes slightly annoyed only if the driver's corner entry or exit is less smooth than Sir Jackie Stewart would recommend.

    Still, we couldn't help but enjoy the drive-at-your-own-risk mode with the stability control switched off. When you briefly lift off the throttle pedal midcorner, then whack it wide open, the tail of the car is easily coaxed into a slide. The faux, brake-induced simulation of a limited-slip differential initially fights the slide, but it eventually relinquishes its hold on the tires and two plumes of magnificent white tire smoke finally emerge.

    The IS-F's turn-in is breathtakingly quick, as the car takes a confident and very firm set through corners with pretty stubborn understeer on the car's limit. We measured 0.93g on our skid pad.

    Though the steering action is as precise as any rack-and-pinion can deliver, the artificially heavy effort of the two-mode, electric power assist (a 42V system) still cannot communicate as much information about the contact patches of the front tires as other sport sedans we've driven.
    Even so, the IS-F weaves its way to an exhilarating 70.2-mph slalom run where oversteer becomes the limiting factor. Credit the car's weight distribution of 54 percent front/46 percent rear.

    F Is for Fast

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    Lexus claims the forged-aluminum 19-inch wheels are about 10 pounds lighter (and 3.5 times more expensive) per corner than comparable cast aluminum wheels of the same dimension.

    Automatic transmissions are slow-acting, power-sapping, indirect hindrances between an engine and a driver's will, right? Yet the IS-F's eight-speed Sport Direct Shift automatic transmission (AA80E) obliterates this notion with an entirely novel — and we think industry-changing — control system.

    While the hardware again has its foundation in the transmission of the LS sedan, lightweight yet robust internals plus a complete rewiring of the transmission's brain have produced an entirely new definition of an automatic transmission. In manual mode, it comes as close to instant shifting as anything we've driven.

    When manual mode (shifted via steering-column paddles or the console-mounted gearlever) is selected, upshift times drop from a Lexus IS 350's typical 1.3 seconds (0.7 second to initiate plus 0.6 second to change ratios) to a mere 0.3 second (0.2 second to initiate plus 0.1 second to shift). We also appreciate the perfectly timed tone that reminds you to shift just before you hit the rev limiter in each gear.

    The gloriously quick downshifts (with matched revs) sound as if the car has a true sequential gearbox. It's unbelievable. The only other transmission that comes close to such quick, driver-friendly action is the dual-clutch DSG gearbox like the one in an Audi A3, or perhaps the latest $9,000, Formula 1-style automated sequential manual like that in the Ferrari 599 GTB Fiorano.

    When it's in Drive, the transmission behaves much like a traditional automatic with the personality and torque-converter lock-up habits of the latest BMW StepTronic, but with two or three too many gears from which to choose. The mundane cut-and-thrust of everyday traffic produces frequent shifting among the eight ratios and it takes some getting used to.

    F Is for Freeway Hop

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    Trust us, the engine looks better with the composite cover, as beneath it lurks what looks like a den of baby black adders.

    While the kind of on-track schooling the IS-F has received is generally a good performance-tuning practice that tends to breed more performance-capable vehicles, it doesn't always make for a livable car.

    The IS-F short-travel suspension rides taut and firm like a racecar's — all the time. Without driver-adjustable suspension, freeway overpasses that are usually registered by the seat of your pants as a gentle, rolling hop become spine-compressing jolts. Consider yourself warned.

    Generation Gap

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    Just like those found on the IS 350, the shift paddles allow manual shifting of the automatic transmission. Unlike those in the IS 350, these will temporarily allow manual shifting even while in Drive.

    What do you think of when you hear "Lexus"? Maybe it's not performance. Initial quality studies, customer satisfaction ratings and a luxury-car benchmark with a reputation for reliability are more like it, and that's why the median age of a Lexus buyer is older than any of its competition among performance-oriented brands.

    The way Lexus sees it, all those WRX and Evo owners are getting older, have increased their earning potential and shortly will be looking for cars that satisfy their inner enthusiasts while avoiding the boy-racer stigma. So the IS-F is the right thing to do for the future of Lexus.

    The 416-hp 2008 Lexus IS-F also intends to take a preemptive bite out of the high-performance compact-sedan pie currently sized up by the forthcoming BMW M3 sedan and Mercedes-Benz C63 AMG.

    The price of the 2008 Lexus IS-F might make it persuasive. Though the official numbers won't be announced for a bit, Lexus says our estimate of $59,900 isn't "embarrassingly inaccurate," so we used the current IS 350's optional $2,550 navigation system price to calculate this IS-F's $62,540 as-tested price.

    The F-Word

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    The F badge: If you're up for an Easter egg hunt, you'll find plenty of these scattered throughout the car. Lexus says its design was inspired by Turn One at Fuji Speedway.

    If it seems that our enthusiasm for the IS-F is mixed, you're right. While we can appreciate all the work that went into this performance-minded, track-worthy Lexus, we're more than a little put off by its harsh ride on the street. Is this truly a usable high-performance car, or just a car for extreme profiling?

    There's also something about the gimmicky styling. The most telling trace of disingenuousness can be found in those stacked quad exhaust "resonators," as Lexus describes them. We discovered that not one of the chromed ovals is directly plumbed to the muffler and are instead part of the rear fascia. They're there just for looks.

    There's too much of this car that reminds us of the supersonic jet-powered sports cars we all used to draw on our denim binders back in third grade.

    F Is for Future

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    The IS-F's instrument cluster is highly contrasted and easy to consult in a hurry.

    Yet there's a whole lot more invested in this notion of a high-performance Lexus than the ill-fated "L Tune" kits for the first-generation IS, which were little more than stiffer suspensions, tacked-on body parts and loud exhaust systems.

    Depending on its success, Lexus says the IS-F is but the first in a series of F-division vehicles, with the next obvious, though not confirmed, candidate being the GS-F.

    We applaud the effort and support Lexus' path down this road, but we hope they spend a little more time on city streets and a little less time on race tracks.

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    While our Obsidian paint job did its best to subdue the droopy jowl on each front fender, the element is said to relieve under-hood pressure

    MSRP of Test Vehicle: $62,540

    What Works:
    Silken fury of the 5.0-liter V8; rule-bending automanual transmission; Michelin PS2 tires make any car better.

    What Needs Work:
    Short-travel suspension rides like aftermarket job; zippy exterior designed by a little kid; electric power steering still doesn't communicate feeling.

    Bottom Line:
    As the first in a series of enthusiast-driven F cars, the IS-F shows Lexus can perform, though there's still room to improve.


    Second Opinion

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    The four-passenger interior of the IS-F is effectively identical to that of the IS 350.

    Editorial Director Kevin Smith says:
    Before I drove the new Lexus IS-F, the Lexus guys chuckled when I said I expected it would be quick and responsive but still smooth, quiet and refined, and maybe a bit numb and isolated, because that's the way of Lexus.

    They knew I was about to discover that the IS-F breaks from Lexus tradition in several key areas, chassis performance being the most striking. Yes, the 5.0-liter, 416-horsepower V8 bellows through its intake and exhaust in a way no Lexus has before. And the eight-speed paddle-shifted automatic makes for instant rev management like no Lexus transmission has ever done.

    But pointing the car at the light pole that tells me where I am cresting the blind and always thrilling apex over Mazda Raceway Laguna Seca's Turn One, then hammering the brakes and bending in to clip the Andretti Curve's first apex, the car is steady, crisp, communicative and, yes, stiff, an adjective never applied to anything about a Lexus except maybe its price.

    Even more telling was busting through the dip at Turn Six's apex, something that can upset a car enough to have you launching off the hill and not hearing anything until Salinas. The F took one firm hit in the dip, settled immediately and was ready to dash up to the Corkscrew.

    Some of my pals have proclaimed the IS-F's suspension intolerably firm on the road. Maybe I was swayed by throwing the car about on Laguna's immaculate new pavement as a first introduction. In any case, the taut, stable, tied-down feel of the F while generating serious velocity is a quality I am happy to proclaim completely and determinedly un-Lexus.

    Performance

    0 - 30 (sec): 1.9
    0 - 45 (sec): 3.3
    0 - 60 (sec): 4.8
    0 - 75 (sec): 6.8
    1/4 Mile (sec @ mph): 13.2 @ 109.3
    30 - 0 (ft): 28
    60 - 0 (ft): 112
    Braking Rating (Excellent, Good, Average, Poor or Very Poor): Excellent
    Slalom (mph): 70.2
    Skid Pad Lateral acceleration (g): 0.93
    Handling Rating (Excellent, Good, Average, Poor or Very Poor): Excellent

    Db @ Idle: 46.9
    Db @ Full Throttle: 80.5
    Db @ 70 mph Cruise: 67.2

    Acceleration Comments: With VSC off and Sport mode on, the first run in Drive happened to be the quickest of many more attempts that followed. That "best" launch was not able to be duplicated, nor were the blazingly quick manual shifts (which came later) able to make up the difference. I suspect I left 2/10ths on the table for the 0-60 time. Same 1.9-second launch plus mind-blowingly fast paddle shifts would certainly be a little quicker. Be that as it may, the IS-F doesn't roast the rear tires as instantly as, say, a 6.3 AMG engine does because the IS-F feels a little artificially torque-restrained from a standstill (brake diff?). Otherwise, power is linear up to the 3,700-rpm secondary intake threshold, where it goes mental. The sound and the fury of the V8 and exhaust system should be recorded for posterity.

    Handling Comments: With VSC off and Sport mode on, the IS-F has gallbladder-flattening grip on the skid pad, but not much feel for what the front tires are enduring. Gentle understeer becomes a resolute "push" when prodded beyond its happy place. I really had to manhandle the car to coax smokey oversteer: It first resists with chattering understeer, then with the brake-actuated limited-slip differential, which finally gives up and allows lurid slides, drifting 1.5 times around the skid pad on full opposite lock. Unlike the stubborn understeer we experienced on the skid pad, the IS-F's tail gets pretty lively in the slalom, which ultimately is the limiting factor. Turn-in is amazingly good, with reassuring bite and grip that works up to a point when the tail begins to walk away gently. The Michelin PS2 tires are progressive and don't fall off abruptly when max grip is exceeded. Steering is still phoning it in rather than telling me in person.

    Braking Comments: Not one bit of ABS noise or flutter, but the tires lurched against the pavement a couple times. Highly fade resistant as the distances tumbled with each additional stop. The pedal is extremely hard under full-ABS stops.

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  2. hsmith

    hsmith OT Supporter

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    Performance isn't that great considering the price.
     
  3. hsmith

    hsmith OT Supporter

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    Only slightly better than a stock 335i
     
  4. TireSmokinSRT

    TireSmokinSRT Bring in the stunt cock

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    :werd:

    for around the same price, the M3 and C63 are going to assrape it.
     
  5. TriShield

    TriShield Super Moderator® Super Moderator

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    As well as the next CTS-V.
     
  6. m3 bavaria

    m3 bavaria Come again?

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    It's ugly, Japanese, and sub-par.

    Great.
     
  7. TireSmokinSRT

    TireSmokinSRT Bring in the stunt cock

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    yeah that too.

    the new CTS's are really nice looking cars...the V's should be badass
     
  8. Kira Yamato

    Kira Yamato New Member

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    meh, im still looking at CST-Vs
     
  9. Justin

    Justin Guest

    You and your CTS-V
     
  10. camaudio

    camaudio TALL. WHITE. BAIT. OT Supporter

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    nice
    but in for cts-v
     
  11. calteg

    calteg Those who would sacrifice personal liberty for sec OT Supporter

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    Don't take things so seriously...life will kill yo
    don't forget the 135i...for half the price
     
  12. TireSmokinSRT

    TireSmokinSRT Bring in the stunt cock

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    you sir, have a fantastic avatar :bowdown:
     
  13. camaudio

    camaudio TALL. WHITE. BAIT. OT Supporter

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    2UR-GSE, no shit?
     
  14. SeaMack99

    SeaMack99 OT Supporter

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    I don't want to hear shit from Toyota until they bring the new "Supra" out
     
  15. Kira Yamato

    Kira Yamato New Member

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    CTS-Vs are nice :o
     
  16. calteg

    calteg Those who would sacrifice personal liberty for sec OT Supporter

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    Don't take things so seriously...life will kill yo
    Lexus just needs to sack up and make a real sports car
     
  17. RobsMob

    RobsMob Guest

    Good to see Lexus trying to compete w/the those guys. Maybe the GS version will be a better iteration.
     
  18. TireSmokinSRT

    TireSmokinSRT Bring in the stunt cock

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    good luck competing with the E63/M5....
     
  19. KNYTE

    KNYTE I'm Not Kidding.

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    lol, Lexus.
     
  20. bubbaZR2

    bubbaZR2 i poop too much, then i get tired... OT Supporter

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    Word


    They're cool and all but i'd much rather have a 2 seater
     
  21. _Trev_

    _Trev_ Ya gotta pay the troll toll... OT Supporter

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    i'd roll it
     
  22. SeaMack99

    SeaMack99 OT Supporter

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    Bring back a real MR2 and maybe the Supra and I'd be hooked
     
  23. Kira Yamato

    Kira Yamato New Member

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  24. TCMS

    TCMS OT Supporter

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    With the 109 trap it is clearly set up for better times.

    I'd expect most of them to hit 12's with relative ease.
     

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