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Thread: Porsche GT3/GT4 failure

  1. #1
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    Default Porsche GT3/GT4 failure

    1.GT4 transmission failure

    I thought porsche was reliable for their transmission and engine.

    This thread had recorded 22 transmission failure:
    GT4 Transmission Failure "Database" - Rennlist Discussion Forums

    I think only 2000+ are sold here?

    And some GT4 and GT3 have strut tower failure
    image.jpg

    2.991 GT3 engine failure
    image.jpg

    It seems to be a lot.
    How many 15-16 gt3's have engine replaced? - Page 2 - Rennlist Discussion Forums

    What do you guys think?
    My thought is PR of porshce really does a good job...
    VA(15) STI/FRS

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    Chest hair required Olitho's Avatar
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    I don't know much about these failures as I have not followed them, but if these are track and race cars 22 failures out of 2000+ is not too bad. I bet most of them are driver induced failures if the numbers are accurate. Most of the rest could be maintenance failures.

    Bottomline - when on track stuff breaks.
    To the right of The Sheriff. Isn't everyone?

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    Quote Originally Posted by Olitho View Post
    I don't know much about these failures as I have not followed them, but if these are track and race cars 22 failures out of 2000+ is not too bad. I bet most of them are driver induced failures if the numbers are accurate. Most of the rest could be maintenance failures.

    Bottomline - when on track stuff breaks.
    They are all 3rd gear failure like this:
    https://youtu.be/h1mRnXgq6WQ

    This one is only 1 year old. Owner doesn't seem to push his car too hard.
    Always love porsche and I feel like my dream car just goes away.
    Last edited by jqsti2015; 03-30-2017 at 11:00 AM.
    VA(15) STI/FRS

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    Master of Disaster SteveLevin's Avatar
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    While Porsche is a quality car, they have had their issues from time to time...the IMS issue with 911 engines comes to mind. Some folks -- like my boss -- didn't experience the failure until well outside the warranty period and despite poking at Porsche, got zero consideration and had to eat the cost of a new engine.

    If something is mechanical, there's a chance for failure.

    Steve
    bawareca and jqsti2015 like this.

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    Chest hair required Olitho's Avatar
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    Assuming there are only 2000 cars and there are 22 failures, 22/2000 = 0.011 failure rate. That still seems pretty low for a track/race car.

    The data on forums is pretty sketchy at best, too....
    To the right of The Sheriff. Isn't everyone?

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    Quote Originally Posted by jqsti2015 View Post
    1.GT4 transmission failure
    And some GT4 and GT3 have strut tower failure
    Attachment 10886

    2.991 GT3 engine failure
    Attachment 10887
    Meh, looks pretty minor to me. Consumables.



    Quote Originally Posted by Olitho View Post
    Bottomline - when on track stuff breaks.
    99% of this hobby is drinking beers around a parked car. And wondering what the {bleep} went wrong.
    bellwilliam and bawareca like this.

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    Administrator ucfbrett's Avatar
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    That strut tower failure is as spectacular as it is unacceptable. #fukenjunk

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    Chest hair required Olitho's Avatar
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    jqsti2015, let me drive your car for a 30 minute session. I can turn it into a statistic for you in half that time. ;-)
    To the right of The Sheriff. Isn't everyone?

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    Quote Originally Posted by Olitho View Post
    jqsti2015, let me drive your car for a 30 minute session. I can turn it into a statistic for you in half that time. ;-)
    I believe you.
    Yea subaru engine, you know
    Never push it lap after lap continuously and never run hot days. I think I'm ok for a few years.

    Good news is it's not expensive to replace one($1700 for OEM short block) and extend both of my two subaru engine warranty to 100k miles.
    Last edited by jqsti2015; 03-30-2017 at 11:54 AM.
    VA(15) STI/FRS

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    Quote Originally Posted by ucfbrett View Post
    That strut tower failure is as spectacular as it is unacceptable. #fukenjunk
    It happened at thunderhill last year due to running over a curb.

    This one looks stranger(991 gt3):
    image.jpgimage.jpg
    Last edited by jqsti2015; 03-30-2017 at 12:02 PM.
    VA(15) STI/FRS

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    Quote Originally Posted by SteveLevin View Post
    While Porsche is a quality car, they have had their issues from time to time...the IMS issue with 911 engines comes to mind. Some folks -- like my boss -- didn't experience the failure until well outside the warranty period and despite poking at Porsche, got zero consideration and had to eat the cost of a new engine.

    If something is mechanical, there's a chance for failure.

    Steve
    Regular 981/991 seems to be reliable in relatively new Porsche.



    image.jpg
    Last edited by jqsti2015; 03-30-2017 at 12:45 PM.
    VA(15) STI/FRS

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    Quote Originally Posted by ucfbrett View Post
    That strut tower failure is as spectacular as it is unacceptable. #fukenjunk
    Actually there are a lot more "GT4 strut tower failure"
    image.jpgimage.jpgimage.jpgimage.jpg

    I'm a porsche hater now.
    VA(15) STI/FRS

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    Administrator ucfbrett's Avatar
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    Long live SLA suspensions!

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    Quote Originally Posted by ucfbrett View Post
    Long live SLA suspensions!
    I'm not surprised if it's any regular model of porsche or any other brand.
    From what I've seen, GT model used to be "German TypeR(red Honda)": super reliable on track compared to others at least when it's under 50k miles.

    I know any thing could happen to any car within any condition but there is a percentage accordingly. For example, we all know EJ257(current STI engine) blows up from time to time but in Iwsti.com forum there is only 7-8 thread 2015+ owner talking about his engine fail. If a forum has more than 5 owner talking about the same issue in one forum then there must be far more than that number in real world. There is 22 owner complaining 3rd gear fail in their GT4. The real number or percentage of GT4 must be much higher than 22 owner accordingly. And all new STI engine fail I know in real world didn't report it online, which is a lot more than 7-8 owners on iwsti.com. I think it's very simple statistical rule: sample percentage. Considering GT4 is only a few thousand; 2015+ STI is around 20,000.

    Reliability is what makes TypeR so popular among some JDM fans. I think GT3 brand has the same way.
    It really hurts the GT brand reputation in car enthusiast community.

    At least for me, I'll skip the 981 platform and wait for 718 feedback.
    Last edited by jqsti2015; 04-01-2017 at 08:07 AM.
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    Long live Torsion bar cars!

    :P
    Thanks,

    Chad
    2016 Elan NP01 Prototype #02 (Chassis #20)
    1969 911ST vintage racer
    1972 911T Numbers Matching under restoration in my garage

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