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Discussion Starter · #1 ·
Friends, I have finally finished my review video on the GR Corolla. I know I'm late to the party, but I thought I'd take a more historical/philosophical approach to this all new sports car from Toyota.


Also, I wanna make up for being MIA since embargo lifted and answer any questions you guys have about the car. I've had a lot of time with Sakamoto-san at this point, and I think I can answer any and all questions you guys have, be they technical or about development. Drop em below!
 

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Discussion Starter · #3 ·
I’m sure people will ask how close final production is for the CE wing and the validity of the center arm rest or if that won’t be a thing haha.
The wing on the CE in the pictures and videos is not final, it's just a Core/ME wing. Sakamoto-san told me it was going to be "a little bigger" but couldn't really explain more than that. Not sure why there's a holdup, I was thinking there was a redesign from the original big wing for MPG target reasons, but that is pure speculation.

The armrest supposedly will come! I was told that it "should be there for start of production" so take that as you will.
 

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The wing on the CE in the pictures and videos is not final, it's just a Core/ME wing. Sakamoto-san told me it was going to be "a little bigger" but couldn't really explain more than that. Not sure why there's a holdup, I was thinking there was a redesign from the original big wing for MPG target reasons, but that is pure speculation.

The armrest supposedly will come! I was told that it "should be there for start of production" so take that as you will.
Awesome thank you! Your review was excellent! It’s nice to hear more about it related to the souls of the GRC vs just the “car”
 

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Thanks for your wonderful video. Did you ask him about the new GR Yaris-tested 8 speed Direct Automatic and its plans for the GR Corolla?
 

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Discussion Starter · #12 ·
Tell us more of the background development, what issues did they have, if any, what Akio wanted etc.

What about hydrogen?
So from what I have been told, their focus has always been stability for the car from the beginning. With the heavier weight and longer wheelbase of the Corolla, it inherently was going to be less rowdy than the Yaris. Apparently they have had prototype configurations ranging from super safe/understeery to really twitchy, and they landed on what they have now as a good in between balance. Akio always kept pushing them to tune out understeer and so it makes sense why the Morizo edition ended up having the stiffest rear spring rate of the bunch.

Although, I personally feel there could have still been some tuning to be done there to push the balance even more towards rotation, but then again, I get why they did it. All the hot hatches on the market have an understeer balance, even the Golf R relies on rear diff trickery to get the back end loose, but that's very different from chassis balance in the end.

Hydrogen is awesome, and the G16E is seriously one of the coolest things that Toyota has produced in a long time. The hydrogen combustion engines have different fuel injectors and fuel lines, and that's it. Everything else is shared with the petrol engine, and it just works. They also have a version that runs synthetic fuel that Toyota is researching, and it runs super well. They have the syn-fuel version running in a 86 somewhere too apparently. The G16E has essentially become the test bed for all future combustion engine development, and Toyota is really refining the tech down to make it more viable.
 

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As for similarities. Would you say this car drive more like a Evo, STI, Focus RS or TTRS? Or something in between these cars. Also, I'm curious if the steering feel is as good as the 86?
 

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Discussion Starter · #14 ·
As for similarities. Would you say this car drive more like a Evo, STI, Focus RS or TTRS? Or something in between these cars. Also, I'm curious if the steering feel is as good as the 86?
I think I'm unqualified to answer the first question, as I have not driven a Focus RS or TTRS. Evo X's I found to be far too dead in its inputs, and all the older Evos are far more raw. I'd say it definitely is closer to an STi, but even then, it doesn't have the general pushiness of an STi, the GR Corolla feels much more buttoned down and neutral.

As far as steering is concerned, the 86 is far superior. In pretty much every aspect. I'll copy pasta my thoughts on the steering from the other thread:
But when I consider steering I break it down into 4 categories:

1. Rack speed: how fast does it point the front wheels
2. Steering weighting: how much effort is required to turn the wheel and how much does it push back against your hands
3. Feedback/Feel: the vibration, bumpiness, road texture that is transmitted to your hands
4. Accuracy: how easy/natural is it to place the car exactly where you want

For the GRC,

1. The rack speed is good. It's 12.7:1 which is a reasonably quick ratio. And it's linear, meaning it doesn't feel dead on center and oversped after 20 degrees like the Supra. The input on center turns the wheels the same as input at 20 degrees off center.

2. Weight is fine. I think it changes a little bit with the settings in the infotainment, but overall it's very average. Not super heavy, not overly light. This can be a big preference thing so I can't tell you if it's good or bad, but I liked it. I hate heavy wheels unless it's a manual rack, and I hate overly assisted wheels because it feels fake.

3. Feedback is not good. It does not transmit very much at all. This was my biggest disappointment about the car. The GR86 let's you feel the texture of the road, how rocky it is, how smooth it is. This car does not, it's very dead. Electric power steering often has this issue, but Toyota engineers usually focus on it, so I'm surprised it's not good here.

4. When you combine all these factors, the overall accuracy is good. Even with the roll of the chassis, it is very easy to point the GR Corolla where you want to. You never find yourself sawing at the wheel to try and get the car pointed in a particular direction. The wheel in your hands very naturally points the tires on the ground, and the car grips well enough to make sure you travel in your intended direction.

Hope that helps!
 

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I think I'm unqualified to answer the first question, as I have not driven a Focus RS or TTRS. Evo X's I found to be far too dead in its inputs, and all the older Evos are far more raw. I'd say it definitely is closer to an STi, but even then, it doesn't have the general pushiness of an STi, the GR Corolla feels much more buttoned down and neutral.

As far as steering is concerned, the 86 is far superior. In pretty much every aspect. I'll copy pasta my thoughts on the steering from the other thread:
This is a very detailed account. Based on your comments, I can get a good idea of how it must have felt.

It's funny that I'm not too concerned about the feedback. I sim race a lot, and I actually turned down force feedback on my sim because it worked against me after I started to understand a car's behavior well. But obviously sims are different from reality.

If three of the four categories are good, that must mean the chassis is doing an excellent job of providing you with confidence since you aren't getting that information through the wheel.
 

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Thanks for your reply Guff! I was shocked how good my TRD 86 steering was and I love the evo, fiesta ST steering as well. With the high boost I worry the throttle will be horrible like the evo was with the on/off switch feel. But with the lag reduced it may not be that bad?

My Civic type r's ride quality is awesome for what it is. I hope this car rides similar (no bounciness). I would pay for a nice quality suspension with performance and comfort with today's tech.

I hope this car will be good enought to have along with my type r as a winter ride that carries kids. Buy since i'm like 4 down the list i'll be lucky to see it before winter 2023 lol.
 

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Hi Guff, I was wondering your thoughts on throttle response and rev hang for the GRC? How would you compare it with the GR86 or ND Miata? In my mind, the ND is among the best in both these categories, with the GR86 a tier just below.
 

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Discussion Starter · #18 ·
Hi Guff, I was wondering your thoughts on throttle response and rev hang for the GRC? How would you compare it with the GR86 or ND Miata? In my mind, the ND is among the best in both these categories, with the GR86 a tier just below.
Rev hang is one of those things where if it's not there, it never crosses your mind; and if it is there, it really ruins your experience.

I am happy to report that I never noticed any rev hang in particular. The engine decelerates very naturally, as far as I could tell.

Throttle response is fine as well. This is a highly boosted little engine so it's important to consider that inherently your right foot gets used with a little less accuracy than on an NA car. But at no point does the throttle feel dead or lazy. You put your foot down, feel the spool up, and then you're off to the races. No issue modulating throttle on street or track.
 

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Discussion Starter · #20 ·
What's your view on Core vs Circuit? Here in Canada the price difference between a core with LSD and circuit is almost 10k, wondering if it's worth it or not...
Core with LSD and Circuit drive exactly the same. Whether or not the aesthetics of the Circuit are worth the extra cash is up to you. It's essentially a hood, wing, carbon roof, painted calipers and alcantara seats. I reckon the vast majority of that cost is the carbon roof.
 
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