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Lexus GS 300/GS 430



  • wwestwwest Posts: 10,706
    No, the mistake was mine, in hindsight it is pretty clear that I should have said RWD or "RWD based" AWD.

    Toyota/Lexus have recently discovered why/how manual transmission drivers use the clutch to extend FE and they're trying to simulate the same effect in automatic transmissions.

    Push in the clutch pedal as you coast down to come to a stop (while simultaneously downshifting for the upcoming acceleration). Toyota/Lexus' new transaxle/transmission control firmware(software) shifts into neutral for parallel effect.

    To match speed, slowing, to merge into an adjacent freeway lane push in the clutch pedal for coastdown (while leaving the transmission in the lower gear appropriate to the possible need to quickly accelerate). T/L's firmware upshifts to simulate the clutch effect leaving you in the totally wrong gear for any upcoming need to accelerate.
  • vonrhettvonrhett Posts: 8
    No, mine is also AWD. I did not notice the original Posters' thread has RWD in the title.

    So all this jerking (and totally wrong gear for acceleration) is the by-product of an attempt to increase fuel efficiency? Bad call, Lexus. If FE was my primary concern, I'd buy a Prius, not a new GS!

    BTW, leaving the ECT in "Power Mode" eliminates the wrong gear for ramp-acceleration issue, but then it tends to get "stuck" in 4th gear as you're cruising at 80mph, with the tach around 4400...
  • atlas7atlas7 Posts: 126
    FYI...I was at my Lexus dealer yesterday inquiring about the LS 460 and the potential for a GS460....Regarding the GS460, he indicated that it probably won't happen. He indicated that the GS300 will get the IS 350 engine with 300+ HP and the Hybrid 450h will be the other GS offering. The 430 engine is dead, only to be available until the LS430's are all sold. So for all practical purposes the GS 430 is history.
  • bhuwanbhuwan Posts: 6
    I have the exact same problem on the AWD!
    If I am in heavy traffic and accelerate ever so slighly while at low speeds, the car jolts forward... Is this a design flaw or a possible problem with my vehicle?
  • max460max460 Posts: 25 GS 350 AND GS 460 have been added to the trademark department also LX 600 :)
  • max460max460 Posts: 25
    Go to
    then click search right hand side then go down and click new user form search basic then type Toyota type the T in capital letter the rest on lower case at the bottom you will see next list and there you!
  • atlas7atlas7 Posts: 126 much for the knwoledgeable Lexus Sales guy.
  • vonrhettvonrhett Posts: 8
    Mine is also AWD, and the tranny problems are getting worse. That annoying low-speed jolt is a BAD design flaw.

    And now, as I accelerate to CA-hiway speeds (aka 80 mph), the tranny will stay in 3rd or 4th gear. 80 in 3rd is near red-line, and 80 in 4th is about 4500 rpm. Yes, it's in "D", not S or a lower gear. It will stay there for MILES, unless I move the gear selector INTO "S", then manually bump up the gearbox to 6th.

    And don't even get me started on all the creaks and rattles from the dash, the moonroof, the console, etc.

    I think the car looks great. But from a driving enjoyment perspective, it's leaves ALOT to be desired.
  • gukfa_tsagukfa_tsa Posts: 1
    Horsepower: 311(US) at 6400rpm
    Torque: 278(US) at 4800rpm
  • lyttonlytton Posts: 14
    Has anyone test-driven both cars? Just curious what people thought about the differences between the two cars...( For the record, I drive th 06 GS300 AWD, but probably would have bought the ES350 if it was available a year ago, to save me some $)
  • amf1932amf1932 Posts: 79
    Does this car definitely require premium fuel with at least 91 octane?
  • bartalk3bartalk3 Posts: 692
    I have driven both cars. The ES350 made me feel old, like a geezer driving a Buick; the GS300 made me feel young. Its handling is far superior to the ES350, although most auto mags rate the GS300 far behind the rivals when it comes to performance. Buy the ES350 if you want a luxurious boulevard cruiser that's whisper-quiet but has no sporty pretensions. Buy the GS300 if you want performance and handling along with luxury and silence. Or better yet, wait for the GS350 this fall, which will give it considerably more umph.
  • dc661dc661 Posts: 71
    Has it been confirmed that we will be getting a GS350 AWD? I hope the don't try and put the 2.5L from the IS250 AWD in the GS sedan. I'm just concerned as there is no IS350 AWD. I hope the AWD system can handle the 300+HP.
  • dc661dc661 Posts: 71
    Answered my own question. Lexus sells a GS350 AWD in Japan right now so i'm sure we will see it soon.
  • wwestwwest Posts: 10,706
    Now if they'd just put that engine/driveline combination in the RX350 that would make it a real SUV. Not in the class of the RDX but at least a contender.
  • dc661dc661 Posts: 71
    Just received an email from Lexus re: The New GS

    Introducing the new, incredibly powerful Lexus GS 350. The numbers speak volumes: 3.5-liter V6, 303 horsepower [1], 274 lb-ft of torque [1]. Numbers that translate into a potent experience at every green light, entrance ramp and passing lane.

    Complementing the faster-than-fast new GS 350 is an inspired available Lexus voice-activated DVD Navigation System [3] with Generation 5 software capable of not just recognizing more than 100 voice commands, but realizing the need to offer directions as quickly as the GS is fast.

  • bartalk3bartalk3 Posts: 692
    The Lexus announcement about the 350 said contact your local dealer to see the car. When will it be available?
  • ao2ao2 Posts: 44
    No...I put the crappy fuel in and have not noticed a difference.

    No difference in pickup AND no difference in MPG
  • kvd2pallakvd2palla Posts: 29
    Was the issue resolved with the seat creaking? Mine is starting to also creak, but not only right turns, left and coming to a stop. Its amazing I left the German world because of the electronic and some mechanical over engineering nightmares they have been having, but their fit and finsh was creaks or crackling noises..even at 100k miles. Now I am in Japanese world, electronics work fantastic along with the mechanicals (so far) but I am getting way to much creaks and crackling for a car that only has 15K and is supposed to be a very quiet and tight car.

    Is not lexus who is master or reverse engineering the competition's vehicls?...and aren't they supposed reproduce the better end result? and resolving the competition's design flaws.
  • bdkinnhbdkinnh Posts: 292
    Yes - there's a TSIB for it. It's for almost all Lexus vehicles, not just the GS. It has to do with seat retaining bolts, or something like that; I'm sure your dealer can look it up.

    It's fairly new - within the last six weeks or so.

    I have to bring my GS in on Monday for a new set of tires, so I'm going to ask them for a roll of the felt tape they used to fix the rattling problems with my glovebox. I recently performed the NAV hack on my car, which involves removing the wood panel under the shifter, as well as the NAV unit itself. It is pretty easy to do, and I figured since I know how to take all that stuff apart now I can apply my own felt tape as needed to get rid of the rattles and squeaks.

    I'm still amazed that the GS is a Lexus product. I've never had a car that made this much noise before.
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