[jebmitchell2012]

Where do you get 87 octane fuel? I've been watching for a while, and all of the pumps around me are either 85 or 88. Haven't seen 87 in a long time! (Not that I think there's a huge difference). What I really hate is the "winter blend" our state requires. Haven't driven my Crown enough to notice the difference, but in my other vehicles there's a consistent 1-3mpg difference.

I’m in Atlanta GA and have personally not seen 85 or 88. All pumps here are 87, 89 and 93. For now, I’m sticking with 87. I didn’t notice ma difference going from 87 to 93 other than cost.

 

[Turbomang]

The whole reason I bought a 2025 Crown limited is because it’s the only premium sedan that gets fantastic gas mileage and uses regular gas. I
Looked at Mercedes, Audi , Porsche and ALL their hybrids you need to use premium? Why on earth would you buy a hybrid to save money on gas then end up paying a dollar or more in fuel?
I could care less about the status symbol of owning a Benz. I get plenty of looks with my Crown !!!

 

[SSN 706]

I've had my Crown Limited for one year now. (2024). I've always had around 37 MPG, and it had varied very little from this. The car drives fine, no issues. The around town driving varies quite a bit, from the mid 30's to 42/43 mpg. Freeway driving is around 36 mpg.

The one thing I was wondering about is if the 21 inch tires reduce the MPG from the 19 inch tires? The 2024 Limited with the Tech package comes with 21 inch tires.

 

[FattiesGoneWild]

Platinum, use premium since it has a turbo. Non turbo models, use regular.

 

[Peter Torres]

Toyota officially recommends 87 octane for the Crown, so it should run just fine on regular gas. However, some owners prefer using premium (91+ octane) for potentially better performance and fuel efficiency, especially in turbocharged models. If you’re not noticing any knocking or performance issues, 87 should be perfectly fine. Have you noticed any differences when using premium

 

[FattiesGoneWild]

The Lexus powertrain uses the same exact one. The only difference is 360hp premium required. The Platinum is 340hp and regular. I haven’t put it on a dyno, but you can notice a performance increase. My guess you are getting that extra oomph like the Lexus using premium. Toyota tuned the Crown for regular or premium at least on the Platinum. I would never use regular with a turbo any ways. I would love to get it on a dyno because I am not going crazy.

 

[MarvinMartianX]

Do some 0-60 runs and/or do a MPG comparison with as identical as possible routes and mileage?

Everything I know about octane suggests higher octane != more power unless the car is designed for that. Turbos start out with "low compression" then effectively have higher compression as the turbo jams more air+fuel into the cylinder. So I'm not exactly sure how that would work. The owner's manual seems pretty clear that 87 is all you need. The "or higher" is what keeps us all guessing though I suppose. From what I've read, the turbo is 11:1 compression which feels high to me. But the 2.5 na engine is 14:1 and definitely only needs 87 so now I'm even more confused. 🤷‍♂️

 

[FattiesGoneWild]

Do some 0-60 runs and/or do a MPG comparison with as identical as possible routes and mileage?

Everything I know about octane suggests higher octane != more power unless the car is designed for that. Turbos start out with "low compression" then effectively have higher compression as the turbo jams more air+fuel into the cylinder. So I'm not exactly sure how that would work. The owner's manual seems pretty clear that 87 is all you need. The "or higher" is what keeps us all guessing though I suppose. From what I've read, the turbo is 11:1 compression which feels high to me. But the 2.5 na engine is 14:1 and definitely only needs 87 so now I'm even more confused. 🤷‍♂️

0-60 runs and mpg changes are hard to tell. It can vary in so many scenarios. It needs to go on the dyno against 87, 91 or 93 octane. I can only go by what I feel and I’m not tripping out. Some more oomph is definitely there. Mine is to new putting it on one and needs to break in further. Maybe another member can do it in the meantime?!?! Don’t you find it strange to boot the Lexus has 360hp using premium and Crown 340hp using regular. They are the exact same power trains. Putting premium in the Crown matches the Lexus at 360hp is my best guess. I can’t put my money where my mouth is as once again, it needs to go on a dyno.

 

[MarvinMartianX]

0-60 runs and mpg changes are hard to tell. It can vary in so many scenarios. It needs to go on the dyno against 87, 91 or 93 octane. I can only go by what I feel and I’m not tripping out. Some more oomph is definitely there. Mine is to new putting it on one and needs to break in further. Maybe another member can do it in the meantime?!?! Don’t you find it strange to boot the Lexus has 360hp using premium and Crown 340hp using regular. They are the exact same power trains. Putting premium in the Crown matches the Lexus at 360hp is my best guess. I can’t put my money where my mouth is as once again, it needs to go on a dyno.

Once I'm broken in and after 1st oil change (1000m ish) I'll give it a try. Mine is still new too. I have an app that can track a 0-60 pretty well.

 

[FattiesGoneWild]

Once I'm broken in and after 1st oil change (1000m ish) I'll give it a try. Mine is still new too. I have an app that can track a 0-60 pretty well.

Nothing personal and with all due respect. That isn’t going to help. It has to be on a dyno to get the full picture. Maybe I can get it on one once broken in since all I am feeding it is premium. Then maybe, we can get another user on a dyno that uses regular exclusively. 🧐 Only then, it will be very telling and interesting! 👍