Fuel capacity / gas tank size is 19 gallons (71.9 liters) + Regular Fuel for 2025 4Runner 6th Gen

[Administrator]

19 gallons / 71.9 liters is the official fuel capacity / gas tank size of the 2025+ 4Runner 6th Gen.

Update:

Regular fuel (not premium gas) is recommended by Toyota - per official specs.

 

[Rubicon2Runner]

Admin update 12/10/24:

19 gallons / 71.9 liters is the official fuel capacity / gas tank size of the 2025+ 4Runner 6th Gen.

I'd have loved 20+, this really isn't too bad from my perspective.

We routinely take our built JK (12.5 mpg/avg) well into the back country in the western US. With a 20 gal tank, 12.5 miles, it's a theoretical range of 250 miles. Even sticking to a 80% capacity limit (keep a reserve), that's still an effective 200 mile range. We carry gas but, while we got uncomfortably low once or twice over the years, we've never had to use it. We simply top off almost every time we come into a small town.

With 19 gal and 22 mpg, that's a theoretical range of 418 miles. Knock that down to 17 mpg because of larger tires what-have-you, that's 323 miles. If we again use our 80% target for planning purposes, that's still 258 miles. If you carry 3-4 gallons w/you as well, you've got plenty for the vast majority of needs. Unless you're, like, going to the Artic Circle .

For me, it comfortably represents a 29% increase in range for our overlanding purposes.

 

[t4r]

Any idea if it requires premium fuel like the Land Cruiser?

 

[kekecarioca]

Any idea if it requires premium fuel like the Land Cruiser?

Regular from the spec sheet released the other day:

 

[t4r]

Regular from the spec sheet released the other day:

Well WTH.
So the Land Cruiser gets 326hp and 465lb-ft on Premium fuel and the 4-Runner gets the same on Regular???? !!!
I’m guessing the engines aren’t tuned any different. Something is missing here.

 

[Mrknowitall]

The 19gal tank is annoying, because the GX gets a 21gal tank in the same wheelbase. The extra capacity would be nice, but wouldn't be worth the expense/work for the swap.

Any idea if it requires premium fuel like the Land Cruiser?

Product specs call out regular fuel.
( 2025_Toyota_4Runner_Product_Information )

 

[Mrknowitall]

Well WTH.
So the Land Cruiser gets 326hp and 465lb-ft on Premium fuel and the 4-Runner gets the same on Regular???? !!!
I’m guessing the engines aren’t tuned any different. Something is missing here.

I think it goes back to the LC being a "premium" product, and there may be some NVH targets that it won't meet on 87Reg.

 

[Henry]

Speaking of using premium gas vs. regular gas - see this:

Premium fuel 91 octane gains 20 HP / 14 lb-ft torque (vs. 87 octane) on gas engine 2.4L i-Force -- dyno test

 

[tomter]

I think it goes back to the LC being a "premium" product, and there may be some NVH targets that it won't meet on 87Reg.

I read from someone else that the need for premium could be because the LC is a heavier vehicle. You can run regular in those engines, but you wouldn't get the performance. The big difference to me is that all of the new 4runners incl hybrid engines will have the 19 gal tanks where the LC's only have 17.9. I have a feeling a future LC refresh will have a larger tank.