2025 Tundra Engine is down!

I saw on Facebook groups “2023-2025 Toyota Tundra Owners) a new 2025 Tundra with only 1270 might has engine failure. Is there more 2025 Tundras with same issue or this is an isolated case?

 

Is this your first time reading about the 3rd Gens?

 

No, but it is first time I see 2025 with engine failure, because I thought Toyota should fixed the issue on April 2024!

 

The issue wasn't "fully resolved" until November 2024. And it would seem it is not fully resolved at this point in time.

 

No. This isn’t new news, unfortunately. The engines are still failing through current models.

 

The 2025s are nowhere near the same number of incidents as the 2022-2024 model years. While there some failures (less than 10), the issue appears to be mostly resolved.

 

Not a lot of miles on the 25's yet. So you can say not as many newer engines failing in early miles as the older ones. The conclusion the newer engines will not fail in similiar numbers over the lifespan as the older ones is an assumption.

There were original failures from first drive taking it home toward 100k. There is no mileage mark at which engine was safe from failure. So the lower early miles failure rate is encouraging but not conclusive

Did Toyota eliminate the problem entirely or just improve it enough to postpone the failure past the warranty end is a valid question that only time will answer since Toyota is not really talking

 

When/If my 2008 gives up the ghost, I would rather pay to restore a 70's- 90's vintage truck of any brand than deal with these fragile over-engineered trucks we have today.

 

You must not live in a metro area where the average driver is going 100 mph while texting, shaving and eating breakfast at the same time.

If you do the safety gear on newer vehicles is worth the upgrade. It may save your life.

All the other gizmos are gee whiz stuff to blow the prices and profits up.

 

They are failing for the exact same reason. I disagree that the issue is mostly resolved.

 

You can think what you want.

 

We are going into the 10th month of the 2025 model year being widely available. There are plenty with 20K+ on them and they aren't failing at the same rate. That is a fact. No one on this forum has the information that I do.

Well aware of the mileage range at which failures have occurred. This particular failure isn't even remotely close to being the lowest mileage failure.

 

How do you know the root cause of the fails? Has someone torn the 25's down and presented results?

 

Do they sell 2024 build dates as early 2025 models?

 

Yup.

 

This isn’t the first 25’ motor to fail in a tundra. It’s happening with the same engine in the Sequoia’s. They’ve all had the same bearing failure diagnosis, which is the same thing the recall was for. Debris being left in the block leading to bearing failure.

 

Not all of them have a bearing failure diagnosis.

 

Then explain the diagnosis for the ones that aren’t and what the reason is. The fact that customers are still dealing with engine failures is unacceptable. Yes, every motor has minor issues. But motors completely breaking down to the point that leaves the customer out of a vehicle for extended periods of time waiting on repairs or Toyota deciding it just needs a whole new motor, is unacceptable.

 

I'm pretty sure a few of the first ones were unrelated to the bearing issue and were caused by other issues such as turbo failure or change of oil issues that resulted in failure.

I think anytime you have humans involved in building engines with such tight tolerances you will have a low percentage of failure. It sucks but in my mind it's unavoidable, especially with builds done here in the States.

 

What a disappointment. Can we at least drop the charade that this is an assembly/debris issue? This is clearly, no doubt, 100% a design flaw. A multi billion dollar corporation with two billion plus dollar manufacturing facilities doesn’t have contaminants grenading their truck motors (and their reputation) 3 or 4 years after identifying ann assembly line issue.

Just like Ford and the Pinto, Toyota (a large multi national corporation) has determined it is more expensive to stop selling trucks and properly design a new motor than it is to fix the trucks that fail outside the warranty period. Caveat emptor. Ask around at what it’ll cost out of pocket to replace one of these motors outside of warranty before thinking the 22+ used Tundras are a great deal.

 

This isn't true. They began building the 2025 models in late 2024, like all manufacturers do. Perhaps you misunderstood the statement?

 

Tell that to GM and the 6.2 recall folks

 

Yup. Read to fast.

2025 model year switch over was September 2024.

 

There have been multiple reports of rods through the block, including a 2024.

 

That's me

 

I suppose you can say GM isn’t blaming the failure on some nonsensical “debris” or “manufacturing” issue, they’ve got bad internal components / materials and GM publicized that. I hadn’t even considered buying a truck again from the big 3 until I saw Toyota’s trainwreck of a response to the problems with this motor.

That said, will I be happy with my ‘25 Sierra HD AT4? Time will tell I suppose but I just flipped 5,000 miles and not a hiccup of any kind thus far. It’s quiet, powerful (6.6 gas motor), very capable and seems well put together thus far. I’ll be buying a new work truck in about 5-6 months and was planning on a ‘26 Tundra SR5, but unless Toyota undercuts GMC/Chevrolet by thousands of dollars, the math just doesn’t work for the Tundra anymore. In the past, I’d happily pay more for a Toyota for the reliability, durability and resale value. The calculus has changed with the gen 3, as it doesn’t offer a clear advantage in reliability/durability nor does it any longer offer better resale. And as has always been the case, dollar for dollar, the Tundra (1st, 2nd and 3rd gen) is less capable and not as well equipped with tech as the offerings from the big 3.

 

hey mr. doomsday is back, where ya been buddy?

and how does the failures getting to be less and less indicate a design flaw? again, if there was a design flaw, you would see more and more as time goes along and more and more trucks get more miles.

I think it absolutely more reasonable there was a debris issue and perhaps assembly thing here and there, nothing is going to be perfect, there can also still be bad batches of parts here and there that are totally unrelated.

anyways, take care and see ya around.

 

Hey buddy, I’m right here saying the same things I’ve said for over 2 years. It’s a design issue. The failures will keep rolling in until Toyota redesigns the 3.4. Apologists (ie the Toyota PR team) said this thread would never exist because the debris problem was fixed in 2023. Then it was fixed again in 2024. Then it was fixed for a third time in 2024. Then the QC manager at Toyota engine was fired and THAT, according to you guys, was the end of this sad chapter in Toyota’s otherwise storied history of building great trucks. But alas, now the 2025s seem to be failing. Toyota’s failures in manufacturing/design and PR have been astounding. I’m a Toyota fan boy, but I’m not blind to current failures. Toyota is going down the same road as Honda it seems, and it’s sad to see.

 

“This recall addresses potential engine damage, including loss of power or complete engine failure, caused by defective internal engine parts.”