2025 Toyota 4runner Gas Tank Size. Hoping for 22 gallon gas tank size too. If we see the same size reduction as on the 4th gen tacoma (which is 2 gallons smaller than the 3rd gen), then 6th gen 4runner's will be 21 gallons since the 5th gen 4runner has 23.

If we see the same size reduction as on the 4th gen tacoma (which is 2 gallons smaller than the 3rd gen), then 6th gen 4runner’s will be 21 gallons since the 5th gen 4runner has 23. Check out our list of sizes for model years 2002 to 2024, based on trim level.