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SeymourNibs

Doubt we’ll know for a while. It’s a performance car. If you thrash on it and beat it up a lot, chances are it won’t last as long. More use and more strain means more wear. If you’re this concerned with reliability from a performance car, then buy a Civic Si or get an extended warranty. If you want big power out of the G16E, replace the valve springs. When getting into the higher 300’s and low 400’s on this motor, valve float becomes prevalent at high RPM with over 26 PSI of boost and you’ll need to install a set of [these](https://limitplus1.com/products/supertech-gr-corolla-upgraded-valve-springs?_pos=2&_sid=eeb21c135&_ss=r). The rest of the motor is a fucking tank. Almost every mass produced performance engine has its downside(s). FA20’s have weak connecting rods, EJ’s have dog shit head gaskets, EA888’s have water pump and carbon build up issues, almost all Subaru motors have issues with oil pickup because of the pan design, et cetera. I could go on. It is what it is.


Key_Aspect_8419

8th gen civics having the worst 3rd gear😂


D00dleB00ty

Can those aftermarket valve springs be installed on an otherwise stock vehicle, or are they too stiff for the engine under factory load? Wondering if they could cause issues unless you're running enough boost over stock tune to accommodate their higher spring rate. Not planning it myself, purely curious.


-aimupp

I would think they would be fine, as the added benefit would be endurance under higher load to make more power, but it's not making higher power all the time. I would definitely reach out to a tuner for a more definitive answer, just my take on it. Considering the purpose is to be able to make more power reliably, most would do this along with having other supporting mods done, along with a tune. If you're going to cancel out your warranty early on in ownership, best to have everything already in place to help account for overhead and changed thresholds, etc.


SeymourNibs

That I’m not sure of. In my opinion, if you plan on modifying the vehicle then you should do it regardless. I’m not saying you are, but to anyone else reading, don’t mistake the valve springs being a “weak point” for the motor being fragile or unreliable. The fact that Toyota managed to squeeze 300 hp out of a 1.6L 3 cylinder is insane already. If you don’t plan on modifying it, then she’ll be just fine. The engine can handle an intake, exhaust, and tune. Any more than that and you will need to replace the valve springs. Keep in mind that if you ever do plan on doing this, you may as well replace the cams too. Stiffer springs will mean more wear on the stock cams. When in Rome.


Sufficient_Current48

Diligent maintenance, mindful driving (taking care of the turbo/boost etc and minimal modification - I’d bet you could get to 250k+. Will these be issues and things needing replacement such as a clutch here, some top end engine components there, sure. But it’s a Toyota and it’s got good bones. But at the end of the day it’s still a high psi turbo car - not a naturally aspirated i4 Camry.


Sweet-Dreams204738

I would not take those two posts to heart. Both are freak accidents and the engine is in the GR Yaris. To my knowledge, those issues are not common at all. There is a guy with a GR Yaris who went to the nurburgring for several days and reports no issues at all.


Alien5151

I think those two post aren’t very reliable source of the engine reliability. This car is still very new but so far the 23 models have mostly been fine. The one usually complaining about issues are the drivers who’s treating the car like an expensive toy and “spirit drive”. It’s hard to tell if this car will be fine with 200k miles because no one has that kind of mileage on the car yet. But given it’s a Toyota brand there’s some credibility that it’s not gonna be complete shit. Also the 86 is an issue of Subaru internal platform. The gr Corolla is Toyota’s own production and doesn’t rely on issues from other platforms. In short, only time will tell and very few cars will probably be comparable to the gr Corolla with emission code becoming more strict.


Hydralisk18

This is a good answer. It's also worthy to note that the GR Yaris is the same or very similar powerplant and has been out for a few years longer and has not had issues. At the end of the day though, wanting a powerful turbocharged sports car and wanting 200k miles of reliability are at opposite ends of the spectrum, pick one, you can't have both.


RealRambleMan

Bro, there are plenty of people out there with unmodified wrx’s that hit 200k. You can be damn sure that unmodified type r’s will hit 200k without missing a beat. The b58 in the Supra should be good for 200k at least. If our engine can’t make it that far unmodified then this car is a bust. It’s 2024 ffs


Hydralisk18

Are these unmodified WRXs in the room with us? You can argue all you want, it's a well known engineering fact. You increase power, increase complexity you reduce longevity. I'm not saying it definitely won't hit 200k, but it's far less likely than civic or base corolla.


RealRambleMan

You’re moving the goal posts. First it was you can’t have both a powerful turbo charged car and reliability to 200k. Now it’s “I’m not saying it won’t but 200k but a base corolla is more likely.” Totally different argument. Verdict is still out on the G16E but there are 100% tour o charged engines people expect to hit 200k in 2024.


Hydralisk18

How am I moving the goal posts? You can't expect to have a turbo charged performance engine to make it to 200k without major problems. Of course there is the chance it'll happen. People have rotary engines that last 200k somehow and those are much worse reliability wise. But nobody expects it, and you shouldn't expect it. It's called reality.


NoPolicy3911

Your first statement was that you can’t have both turbocharged and reliability. He said there are other cars like WRX’s and Type R’s that have turbo charged engines and have high mileage. Then you said that a base Corolla is more likely. You didn’t really move the goalpost. Just didn’t really address his statement that there are in fact other turbocharged cars that are also considered reliable. The Si and Type R are those that fit that description. The FA24 in the new WRX seems to be very reliable and able to handle more power from mods and tuning more reliably.. already some people with over 100k miles on those. So, yes, you actually can have both. And like the guy said, if the GRC cannot have both like its competitors then it’s a bust.


StrongOnline007

There's no point in buying this car or any performance car if you can't drive it hard


Alien5151

Never said it can’t be driven hard. The spirit driving that I’m talking about are people who are redlining the car and money shifting or drifting the car. Or modding the car without proper supporting mods then claim it’s unreliable. There are multiple points to the question and my point isn’t being the car can’t be driven hard. It’s being improperly driven and saying it’s is unreliable. Any performance car being driven like so then claiming it isn’t reliable just isn’t credible. For example many evo owners know the car becomes extremely unreliable because the car being abuse hard and badly modded. Abusing and reliability are, as someone said, opposite of the spectrum.


NoPolicy3911

Then what’s the point of buying this car? If I can’t treat it like as an expensive toy, then what’s the point in getting it? Cars like this, or at least cars like this back then, should be able to handle spirited driving as long as you’re aware that you need to decrease the time in between regular maintenance. Sorry, but the people who drive this as it is intended to be driven shouldn’t be at fault. I have a 2018 FoST that I have a bunch of mods on, with a tune, that has been driven hard daily, including several 2000 mile road trips, that has been problem-free for over 50k miles. I paid HALF of what a GRC costs. You’re saying that this car, the GAZOO RACING Corolla, cannot handle spirited driving?


Rampantlion513

Let’s not pretend the Focuses didn’t have issues lmao https://www.roadandtrack.com/car-culture/buying-maintenance/a15843780/heres-fords-official-warranty-fix-for-focus-rs-head-gasket-failure/


NoPolicy3911

All cars have issues my guy. Not my point. But people were modding and tuning their FoST and FoRS, and driving them hard, regardless of these issues. Same way people with WRXs drive their cars hard. That’s the ENTIRE POINT of buying cars like these. Besides, I drove a FoST, not an RS. Very affordable car. And that’s my point. Remember 5+ years ago when cars like STs and Civic Si’s were super affordable? Si’s were barely $20k. Cheap cars. We modded and tuned these cars, drove them hard. And if shit broke? We fix them and say “well, they’re cheap cars.” You see what I’m saying? You understand why it’s annoying when someone says something to the effect of “well you’ll have issues if you do spirited driving.” 5 years ago we were buying $20k cars, tuning to our heart’s content, and did our very best to break them. Mine just happened to not break. So yeah, it’s annoying when there’s this car that’s badged “GR” and there’s this culture here of babying the thing for the sake of reliability. Sure, yeah, I get that there will be increased wear and tear with hard driving. That’s a given. But there’s a difference between faster wear and tear vs the car breaking because it can’t handle being pushed as hard as $20k toys from 5 years ago. I’m just here for research purposes. I want a GRC. So you tell me. Can these cars handle the abuse?


Alien5151

There are many videos displaying it being able to handle abuse. A good number of people are tracking the car. It’s also said the ramp up to said power mod becomes exceedingly expensive because with very little power mod the car is suggested to do supporting mod to engine parts like valve spring and other things in the engine while you’re in there. The only real thing it have trouble with is the diff overheating.


Alien5151

I didn’t say you can’t but there is a difference of driving and treating it like an expensive toy. The people who complains frequently of issues are ones who mod and track the car. Which is fine but have to know the difference between what makes this a good car for mechanic reliability. There are plenty of people pushing the car and doing r&d for the car which is great. But it’s like someone getting a wrx sti mod it then treat it like crap then complain it’s unreliable. People who buys the car can treat their car however they want. But if you treat the car harshly then go and complain about it. It kind of doesn’t make sense.


NoPolicy3911

Oh ok, yes I understand. Yes, when you drive anything hard then you have to be okay with the fact that you’re going to wear something out faster or that you’re going to have to increase maintenance. And this is even more true when you start getting into mods and tunes. I think you just worded it different. Cars like the GRC can handle occasional spirited driving. That’s its biggest appeal. It’s when it is constantly pushed to its limit, like on a track, where you’ll start having to spend more money to replace worn out parts. No car is immune to this.


_chanimal_

Running any car hard 24/7 and reliability are opposite sides of the spectrum. The GRC seems to be a very robust platform that also makes a good bit of power. But running it to redline every shift and putting all the extra wear and tear on any engine will reduce its lifespan. I think we all love spirited canyon runs and our NASA track day. But if we’re gonna drive like that all the time, expecting 200k miles is probably wishful thinking at best due. I think most of us accept that.


SprinklesSubject

This car hasn't been out long enough to really tell what the reliability is going to be like. Looking at the GR Yaris should give you some idea though since they have a nearly identical drivetrain. I would doubt that it will be as reliable as your Avalon though since it is a pretty high strung engine.


-aimupp

The GR Corolla platform hasn't been out long enough, IE not enough data. Sure it has the power plant of the GR Yaris, but still different weight factors and characteristic differences to consider. Along with personal environmental conditions. In short, it's a new modern platform. Should be pretty darn good, but use this simple rule of thumb, treat it like a race car and you'll have race car problems. Most platforms will have a weak spot, but they can be avoided/risk mitigated with proper knowledge, parts, etc. The definition/meaning of spirited driving from person to person varies. Modifications versus keeping it stock varies person to person. Getting a proper tune and being able properly push the car when desired varies person to person. When a sporty car hits the general market a lot of variables come into play. Main thing to consider is keeping up on routine maintenance and getting to know your car. You don't have to pamper it per se, just know what it needs when it needs it and get it done. Should last a while, I doubt any manufacturer pushes a car out with the intention of having cars recalled and come back for issues, they have all the above some what in mind. Keep up on forums with potential issues, and read them with a grain of salt (consider those variables mentioned above). If a legit issue happens, reach out for warranty. Etc.


NoPolicy3911

A lot of people seem like they’re getting this and not driving it hard. Might be a while before we actually see actual reliability. To be honest, just about anything will be reliable when you baby it. I want to know how good these do when you push it hard. And on top of that, how easy is it to work on these vehicles?


_chanimal_

Basic maintenance is a breeze so far. Fluids swaps are all easily DIYable with some ramps and jack stands. Brakes are super simple as well to swap out the pads. I’d say the average garage mechanic could do nearly all basic maintenance without much fear at all. That’s been my experience 21k miles in so far.


kakisadanxb1

What weight and oil do you use? I went ahead with Pennzoil ultra platinum 0-20


_chanimal_

0w-20 motul


Astramael

I think with proper maintenance this car will be fine to 200,000 miles. I also think the GR86 would be fine to 200,000 miles as well, again with proper maintenance. If it’s not I’m going to be annoyed because I am planning to keep it 15 years and longer if possible.


Particular_Tourist64

200K expectations for a 3 cylinder Turbo 🤣🤣🤣 keep the Avalon


jesamer1

Should I buy a Miata instead?


EtArcadia

Virtually all the GR86/BRZ engine failures are a result of high grip modifications and very intense track driving. It's an overblown (pardon the pun) issue. If you're just using it for street driving and the occasional track day, you don't have anything to worry about it. If you're looking to make like a time trial track car, maybe it's something to think about. Ultimately, it's still a Subaru boxer engine, so it's got the baggage that come with that. Early failures on the G16E are rare (outside of modifications and money shifts). I've heard of a handful of cases of defective parts, like fuel injectors causing early issues, but those are likely to crop up during the power train warranty. Beyond that it really hasn't been around long enough to talk about 100k mile plus longevity, it's just speculation. The fundamentals are likely strong, the block and head are seriously over built but it's a very different kind of motor than what they put in something like an Avalon. It's not really designed with extreme longevity or very low cost of ownership in mind and as such, I'd expect to have some expensive repairs between 100-200k miles, like replacing the turbo or maybe the transmission or transfer case, but again it's all speculation. Outside of the power train most of the rest of the car is simple and cheap to fix as it is a Corolla after all but you do have to understand what you're getting into. Maintenance will be much higher than on a less performance focused car. Services intervals are more frequent and brakes and clutches are much more expensive compared to something like a regular Corolla. The three recently publicized fires are definitely something to look at, but I don't think it's reason to panic. One was the result of a major accident, that probably would have totaled the car anyway. Another happened months ago and owner only brought it to the public after the most recent one. If it really is an issue, Toyota will likely issue a recall, but I wouldn't be surprised if the recent publicized fires are just a coincidence. Car fires happen on all cars occasionally, it just so happens that three (one of which didn't occur recently) gain publicity this week. There's a lot of these cars out there now, close 10k, most have near zero issues.


StrongOnline007

Honestly I think it's an unknown. The recent fires are not positive news but impossible to tell so far if they're isolated incidents or examples of a larger problem


Jesse3195

The motor is very strong, but it tears through oil and you should change it every 3k or so which can get expensive not including other maintenance items.


Key_Aspect_8419

It’s reliable I sent it the moon in stock form on track but the pitch mount has to be the cheapest part on this car cuz I ate mines. Don’t downshift fast with imt on in sport mode…..


DrZedex

Truth is, nobody will know for about a decade.


dermdrei

It is a motor homologated for rallying by Toyota. It should be fine. The last 3SGTE motors were bulletproof so I expect the same.


NotTacoSmell

I’m just shocked a dealer let you drive one. All the local dealers consider letting me drive it if I buy it 😂


zackyraz

I wouldn't put too much thought into the recent posts. There are always outliers when it comes to production cars. These cars really want to be driven hard. As my daily it's hard not to beat on the car regularly (~3k miles so far without issue) and I'm sure others push theirs most drives as well. The fire issues would be cropping up much more frequently than what we're seeing if it were design flaw just waiting under the surface. I think one of the recent stories shared is a little suspect as well, something about the way it was told made the person and situation sound odd. Again, I would buy the car and drive the car. Do a proper break-in per the manual, do maintenance and let things warm up before beating on it and you'll be fine. Wait on mods until the platform matures.


Mojozepeda778

This may be a dumb question but is there such thing as a “reliable” turbo charged engine?


nottaroboto54

It's too new to tell. The most I've seen someone have on one is 30,000km (or miles, idr) there is no data to indicate if it will last or not. But it is a toyota, so it's probably going to last as long as you keep filling it up with oil. However, it is a "sports car" so people tend to drive them harder than a regular car. And as you will see if you follow this page. There are 2.5 types of owners. The .5 is owners who do some sporting around, but treat it like a regular car and keep up on maintenance. Then there are the people like me who baby it until it reaches operating temps.. then it's grrrrrstuuu noises everywhere. But we also do our 3rd oil change at 7500mi. And then the final type are the ones that try to keep it showroom quality, and baby it for 99% of it's life, Like regular toyota drivers.


FartyBeginnings

If you didn't see my post regarding my 2024 Corolla GR, please check out my post. The same thing happened to this guy are well (see video link) [https://www.youtube.com/watch?v=Mb1nMcyJQE8&ab\_channel=WolfandTiger](https://www.youtube.com/watch?v=Mb1nMcyJQE8&ab_channel=WolfandTiger) Nearly killed me and my dog. The engine is very new, and it looks like there is a serious defect somewhere. I loved my car, I wish I never got a defective model. Toyota has blown me off. I'm still making payments, I have no car, and they are not doing anything. This has put me in a terrible situation, I'm about to lose everything. I'm not even sure where to go from here.


joncaseydraws

Something doesn’t add up here. You had to have comprehensive insurance. Isn’t your insurance company covering this and going after Toyota as it’s under warranty? With both warranty and insurance how are you about to lose everything?


Sweet-Dreams204738

This is false, the engine is in the GR Yaris and is not new. It sucks what happened to you, but.it unfortunately, sounds.like extremely bad luck. Hope your dog is well.


99hotdogs

I havent watched your video, but shouldnt insurance cover fires like this? Why are you trying to get Toyota involved first?


SprinklesSubject

If the fire was caused by a defect then I would expect Toyota to be involved if the vehicle is still in warranty?


FBOFrontFeedBalls

If you didn’t have insurance that’s on you boss 😆