Anyone worried about their V6TT?

The Issues of the V35A-FTS have been seen since 2017 with the ls500. Fine, but based on my research for the J300 platform, it took around 10 years of development and testing for the chassis to withstand what a land cruiser should be able to survive.
Indeed this new engine is a marvel of complexity, might wanna read the SAE paper for the development of this powertrain.
Many things that made it better than the engines before and others not so good.
I stand by Lexus and toyota, if this 2026 engines still have problems , we have the 10 year , 200,000 kilometer warranty.

The problem with this recall is not what the recall is about, it has to do with the fact that is Toyota/ Lexus doing an engine recall, something that as long as i have learned to discover, has not been seen in a long time. That why it has become such a trend on youtube. While Gm has a worst recall right now, that hyundai and kia also have a worst recall. Pallaside right now has a nation wide sale stop because it killed a 2 year old boy crushed by the rear seat, the system did not detect that there was a person and he was crushed.
Only time will tell.
The other engine that you might not know from the J300 platform, a new diesel from toyota, F33A-FTV 3.3L TTV6 diesel with the same hot V configuration.
It had failures running 0w-20 oil, oil burning problems too...
Golden times of unmtached reliability is gone, but we have a good powertrain.
Lets stay positive.
I was pretty scared buying My 2026 gx and my family is friends of the lexus regional manager of the caribbean. Here in Panama the engine replacemente takes 30 days, they do it completely, and she assured me based on the meetings they`ve had with Japan, that the issue has been resolved.
fun Fact we here use 0W-20 in Panama, we have same heat as australia and dubai (UAE) and worse quality of gasoline, so I do not think that oil Thickness might be a problem in this engine, unless its used for hard continued work.

I do not know if any has been curious as I have been,
But this engine runs extremely hot, try when ending the trip put the engine to cool down between 1 minute to 5 minuted.
The engine bay plastics are extremely hot, I know it sounds stupid, but it’s hot.
Any idea when he says the engine issues were resolved? Also my family thinks I’m crazy because I sit in the car and let it cool down for a minute before shutting the car off.
 
Any idea when he says the engine issues were resolved? Also my family thinks I’m crazy because I sit in the car and let it cool down for a minute before shutting the car off.
She meant the same, that we have heard from lexus techs, that the debri has bee cleared and discovered the cause. that the 2026 is not in ttrouble
 
Look, if you are able to get an allocation for a 2026 Gx , go for it and sell the gx for 76k. I f you can not, the only great option for replacement is the Armada Pro-4x, which wins in every single characteristics except longggg term reliabilty.
This was a not Lexus dealer trade offer. Carmax and Lexus were at $72k last I checked and ours is PPFd and ceramic coated it’s a 25 not in recall so I’m fine with it. Probably snag another one when we get closer to 100k but moving to a 26 doesn’t make sense unless of course it was that offer for a 26.
 
She meant the same, that we have heard from lexus techs, that the debri has bee cleared and discovered the cause. that the 2026 is not in ttrouble
The issue was discovered and fixed in ‘24. That means not all ‘24’s were effected and no ‘25-‘26’s were effected. Of course that’s assuming what Toyota/Lexus have said is accurate.
 
The issue was discovered and fixed in ‘24. That means not all ‘24’s were effected and no ‘25-‘26’s were effected. Of course that’s assuming what Toyota/Lexus have said is accurate.
The problem is if that were true then tundra engines would not be failing in 25 and 26 models, and yet they are.

Someone on this forum told me about Ryan Gregg and I went down a rabbit whole. He seems to be as well informed and tuned in on this issue as one can be. What he has said in a YouTube video is that the debris issue got under control in November 2024, but he also said that there was going to be a fairly significant upgrade of the V35 engine coming this spring.

That might be why production is slowed on these things, at least that’s my thinking.
 
Are you saying engines built in ‘25-‘26 are failing or that engines built in ‘24 but not part of the recall continue to fail?
 
Are you saying engines built in ‘25-‘26 are failing or that engines built in ‘24 but not part of the recall continue to fail?
I’m saying there are v35 engines built in 25 and 26 model year tundras that have failed. See below link. That guy did everything he was supposed to do in terms of oil changes and it still failed.

 
To answer the OPs question in the title - Nope. Not worried at all.
My family drives Toyotas & Lexus vehicles for the confidence learned from hands on experience. Sorry if you’ve had issues, but I’ll take a Toyota still, as I know if there is an issue they’ll stand behind them.

There is so much more power left in this V6TT powertrain. Seems like It’s built with Toyota dependability & reliability as THE priority. I don’t think Toyota is by any means perfect, but in 2026 no other make out there is giving you a better vehicle with quality, looks, dependability & performance. You can get a few on that list, but few manufacturers give all of them. Still, the current 3.4L V6TT have tiny turbos, wastegates pop off boost ridiculously early, ECU is tame - but all so it will last. Toyota did their homework to give a nice MPG improvement over their 5.7L V8, with near same power. With a little more power the GX550 could be a tow monster.

I have the same engine as the GX in our ‘25 Tundra, and it has the upgrade TRD Performance Package. You can order it as port mod on new Tundras. I got lucky & sourced the components & worked with a good Toyota dealer. Package consists of TRD dual cold air intakes & up pipes, TRD center exhaust, TRD tail pipe & remaps the ECU. Driveability is night & day difference w/ excellent throttle tip-in, sharper shift points, holds boost a bit longer, and even mpg is better. Little more HP, but peak torque curve happens @ 2000 rpm. Downside - she now uses premium. But all under powertrain warranty when a dealer does the install. I hope Toyota/ Lexus can focus on bringing a similar Performance Package out for GX. Probably little chance while they’re busy focusing the company to improve quality even higher.

Read an article that in the last decade there has been a change where now 70% of US drivers have never changed a tire, or changed their own oil, - probably never been under their vehicle. Guessing to some degree it may be why some vehicle forums are so popular. I admit I’m probably one of the few dinosaurs that likes doing mods. I cringe the day is coming where manufacturers will want me to just pay a subscription to turn on more performance, where instead I hope some of us still like doing it ourselves. Recently swapped our new Tundra’s small 22G gas tank out to a 36G version for more range, but that’s another story.

Glad Toyota is refocusing & questioning quality. Makes them better, helps our resale, & puts the rest of the manufacturers on their heels..
 
The problem is if that were true then tundra engines would not be failing in 25 and 26 models, and yet they are.

Someone on this forum told me about Ryan Gregg and I went down a rabbit whole. He seems to be as well informed and tuned in on this issue as one can be. What he has said in a YouTube video is that the debris issue got under control in November 2024, but he also said that there was going to be a fairly significant upgrade of the V35 engine coming this spring.

That might be why production is slowed on these things, at least that’s my thinking.
Since you’ve gone the rabbit hole already, did this Ryan Gregg ever explained why Toyota is issuing voluntary recall? And chooses to waste billions of dollar to replace bad engines with bad engines that they’ll need to replace again?

If the “fix” is coming this spring, why not kick the can down the road for few years until the fix is ready? Like gm with their 6.2 v8? And start replacing engines then? Wouldn’t it be crazy to start replacing engines mid 2024 knowing that the fix is in mid 2026?
 
Since you’ve gone the rabbit hole already, did this Ryan Gregg ever explained why Toyota is issuing voluntary recall? And chooses to waste billions of dollar to replace bad engines with bad engines that they’ll need to replace again?

If the “fix” is coming this spring, why not kick the can down the road for few years until the fix is ready? Like gm with their 6.2 v8? And start replacing engines then? Wouldn’t it be crazy to start replacing engines mid 2024 knowing that the fix is in mid 2026?
I don’t think he pretends to have all the answers nor do I. But the engine recall in 2024 obviously did not fix the problem because new crate engines were also failing.

He said the numbers are getting better in terms of failures in 2025 and 2026 but still occurring, that someone high up in Japan was tasked with fixing the debris issue which was a very real thing and not an excuse for a bad engine design. Again he said the debris issue was under control by November 2024. But he also said that parts were going to be reinforced and upgraded to improve the engine and that parts number changes would be coming by April timeframe. We’ll see if he’s right about it. Seems he knew more about the tundra than anything else. He had Toyota issue him a cease and desist for leaking information he wasn’t supposed to have, and he had to take down a spreadsheet he was compiling of engine failures.

I love my Gx550, but let’s not bury our heads in the sand and pretend like things are great. I think having a detuned version of the V35 has saved the gx from having more failures and also maybe being from the Japan factory vs US.
 
That is only because they are artificially scarce. Wait till they aren't.
Hmmm - Lexus has the highest resale value of any car brand. Your logic is not doing you favors. Buy whatever you want - but there are few on here saying 'shucks, I wish I had bought a LR versus my GX'
 
Good news In this climate of GX resale values that owners have ample opportunity to jump to a LR nearly pain free. Go ahead & get that CarMax bid & you’ll be pretty happy.

If that’s someone’s choice to move to LR over Lexus from a quality concern then I’m confident they’ve never owned a LR. It’s beyond ludicrous to even talk quality and have LR in the same sentence..
 
I don’t think he pretends to have all the answers nor do I. But the engine recall in 2024 obviously did not fix the problem because new crate engines were also failing.

He said the numbers are getting better in terms of failures in 2025 and 2026 but still occurring, that someone high up in Japan was tasked with fixing the debris issue which was a very real thing and not an excuse for a bad engine design. Again he said the debris issue was under control by November 2024. But he also said that parts were going to be reinforced and upgraded to improve the engine and that parts number changes would be coming by April timeframe. We’ll see if he’s right about it. Seems he knew more about the tundra than anything else. He had Toyota issue him a cease and desist for leaking information he wasn’t supposed to have, and he had to take down a spreadsheet he was compiling of engine failures.

I love my Gx550, but let’s not bury our heads in the sand and pretend like things are great. I think having a detuned version of the V35 has saved the gx from having more failures and also maybe being from the Japan factory vs US.

Both things - issues were fixed in 2024 and replacements / 2025 engines filing can be true at the same time. When something is mass manufactured there are always going to be some defects and issues. Engines fail all the time - bad oil pump can destroy the best engine. What matters is the ratio. It's possible that since 2025 failures are actually rare - within historic norm, but enthusiasts, owners, youtubers, clickbaiters are so fixated on those failures that it's blowing up.

Toyota making changes to internal components is not unheard off either - kaizen and all. Maybe the alleged upcoming changes aren't even driven by main bearing failures. Who knows 🤷‍♂️

I for one too love my GX and am planning on long ownership. I hope the engine doesn't have issues, but if it does, well, I'd rather it be Lexus/Toyota than GM, LR, Stellantis, etc.
 
This was a not Lexus dealer trade offer. Carmax and Lexus were at $72k last I checked and ours is PPFd and ceramic coated it’s a 25 not in recall so I’m fine with it. Probably snag another one when we get closer to 100k but moving to a 26 doesn’t make sense unless of course it was that offer for a 26.
oops my friend, I totally miss understood your comment. My bad and I´m sorry.
 
To answer the OPs question in the title - Nope. Not worried at all.
My family drives Toyotas & Lexus vehicles for the confidence learned from hands on experience. Sorry if you’ve had issues, but I’ll take a Toyota still, as I know if there is an issue they’ll stand behind them.

There is so much more power left in this V6TT powertrain. Seems like It’s built with Toyota dependability & reliability as THE priority. I don’t think Toyota is by any means perfect, but in 2026 no other make out there is giving you a better vehicle with quality, looks, dependability & performance. You can get a few on that list, but few manufacturers give all of them. Still, the current 3.4L V6TT have tiny turbos, wastegates pop off boost ridiculously early, ECU is tame - but all so it will last. Toyota did their homework to give a nice MPG improvement over their 5.7L V8, with near same power. With a little more power the GX550 could be a tow monster.

I have the same engine as the GX in our ‘25 Tundra, and it has the upgrade TRD Performance Package. You can order it as port mod on new Tundras. I got lucky & sourced the components & worked with a good Toyota dealer. Package consists of TRD dual cold air intakes & up pipes, TRD center exhaust, TRD tail pipe & remaps the ECU. Driveability is night & day difference w/ excellent throttle tip-in, sharper shift points, holds boost a bit longer, and even mpg is better. Little more HP, but peak torque curve happens @ 2000 rpm. Downside - she now uses premium. But all under powertrain warranty when a dealer does the install. I hope Toyota/ Lexus can focus on bringing a similar Performance Package out for GX. Probably little chance while they’re busy focusing the company to improve quality even higher.

Read an article that in the last decade there has been a change where now 70% of US drivers have never changed a tire, or changed their own oil, - probably never been under their vehicle. Guessing to some degree it may be why some vehicle forums are so popular. I admit I’m probably one of the few dinosaurs that likes doing mods. I cringe the day is coming where manufacturers will want me to just pay a subscription to turn on more performance, where instead I hope some of us still like doing it ourselves. Recently swapped our new Tundra’s small 22G gas tank out to a 36G version for more range, but that’s another story.

Glad Toyota is refocusing & questioning quality. Makes them better, helps our resale, & puts the rest of the manufacturers on their heels..
Great info, amazing experience. Might wanna share some pics of the dual intakes and charge pipes from trd. I literally had no idea of such package. Theres also a long range tank for the gx550, i think from long range america I guess. This dude deserves the secundary fuel tank that this platform can use. The prado in australia has a 110L fuel tank. We get in Panama the Australia verison of the Lx600 which in turn also has the 110L fuel tank vs 80L in he Gx550.
 
I don’t think he pretends to have all the answers nor do I. But the engine recall in 2024 obviously did not fix the problem because new crate engines were also failing.

He said the numbers are getting better in terms of failures in 2025 and 2026 but still occurring, that someone high up in Japan was tasked with fixing the debris issue which was a very real thing and not an excuse for a bad engine design. Again he said the debris issue was under control by November 2024. But he also said that parts were going to be reinforced and upgraded to improve the engine and that parts number changes would be coming by April timeframe. We’ll see if he’s right about it. Seems he knew more about the tundra than anything else. He had Toyota issue him a cease and desist for leaking information he wasn’t supposed to have, and he had to take down a spreadsheet he was compiling of engine failures.

I love my Gx550, but let’s not bury our heads in the sand and pretend like things are great. I think having a detuned version of the V35 has saved the gx from having more failures and also maybe being from the Japan factory vs US.
Look this topic is too big and actually needs more facts. Based on real total cases reported vs # of total engines included in the recall. Second, yes we do see videos and testimonies from people stating engine failed, some wont be covered by warranty, other do. Third, all of this vehicles require a break-in Period and should be done an early oil change like it has been taught by common knowledge during all this time. Many here will argue me that a 600 mile - 700 mile first oil change is not requiered. I grew here in Panama it was always said by Japanese car dealerships, bring the car in the first 1000kms for the break in oil change. Then the filled up another thicker oil and then they used the normal oil.
For example i had my firts oil change done in My gx by lexus panama. They drained the oil and filled it up with this one. a 0w-20 TotalEnergies QUARTZ INEO X.EC5 0W20
I do not understand why but thats what dealer in filling vehicles.
If theres a failure, they are the only resposables.
I mean, the Gx has a detuned High end power , but not the low end torque, also its smaller turbos spool faster, giving a better pep response. I drove this one against the lx .. the way this gx is tunned, its more towards daily use kinda diesel like.
 
Great info, amazing experience. Might wanna share some pics of the dual intakes and charge pipes from trd. I literally had no idea of such package. Theres also a long range tank for the gx550, i think from long range america I guess. This dude deserves the secundary fuel tank that this platform can use. The prado in australia has a 110L fuel tank. We get in Panama the Australia verison of the Lx600 which in turn also has the 110L fuel tank vs 80L in he Gx550.

Post #349 has pics
 
If that’s someone’s choice to move to LR over Lexus from a quality concern then I’m confident they’ve never owned a LR. It’s beyond ludicrous to even talk quality and have LR in the same sentence..
Bravo

I still love Land Rover. I have LR stuff here in my office, in my garage, my favorite coffee cup is LR, my 10-year-old boy wore my 50th anniversary LR baseball cap out the other night, etc. I drove Discoveries for 25 years. But they have nothing to do with quality and dependability, not to mention affordability. They are a money pit.
 
I will say LR has gotten better over the years. My mom had a 2003 Discovery that was her "cool mom car" that was trash, she now has a 2020 First Edition Defender that has had zero problems. Not my cup of tea, but it's for sure a cool car to drive, more luxury and solid feeling than the GX in my opinion, but long term reliability and overall quality I would give to the Lexus but I'm a Toyota fan boy.
 

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