Ford F-350 Fuel Tank Capacity
How big is the gas tank on a 2026 Ford F-350?
The 2026 Ford F-350 has a 34-gallon fuel tank (48 gallons with the optional extended-range tank).
Latest model year (2026):
The Ford F-350 holds 34 gallons of fuel, or 48 gallons with the optional extended-range tank.
Ford F-350 Gas Tank — All Years
| Year | Tank Capacity | Optional Tank | Combined MPG | Est. Range |
|---|---|---|---|---|
| 2026 | 34 gal | 48 gal | — | — |
| 2025 | 34 gal | 48 gal | — | — |
| 2024 | 34 gal | 48 gal | — | — |
| 2023 | 34 gal | 48 gal | — | — |
| 2022 | 34 gal | 48 gal | — | — |
| 2021 | 34 gal | 48 gal | — | — |
| 2020 | 34 gal | 48 gal | — | — |
Manufacturer specification data sourced from Manufacturer specifications, last verified August 17, 2026. Always confirm against the owner's manual or door-jamb placard before towing or buying tires — figures vary by cab, bed, axle ratio, and options.
Ford F-350 data analysis
How Ford F-350 fuel tank capacity varies
Across 7 configurations recorded for the 2020 through 2026 Ford F-350, fuel tank capacity runs from 34 gallons to 34 gallons. The strongest figure belongs to the 2020 Ford F-350 (Standard) at 34 gallons, and the weakest to the 2026 car (Standard) at 34 gallons — a spread of 0%. The narrow spread means any year of the Ford F-350 in this table behaves much like the others, so you can shop on price, condition and mileage rather than chasing a particular model year.
What changed for 2026
Average fuel tank capacity for the 2026 Ford F-350 is 34 gallons, against 34 gallons for the 2025 car — it held flat. A carry-over year like this usually means no powertrain or structural change, so an older example is the cheaper way into the same specification.
How to read this Ford F-350 data
This page lists every 2020 through 2026 Ford F-350 record we hold for this measurement — 7 rows in total, one per configuration and model year rather than a single headline figure. Figures are published as the source agency records them: we do not round, average or interpolate missing years, and a year that is absent from the table is a year with no published measurement rather than a zero. Where a manufacturer offered several drivetrains or body styles in the same year, each appears on its own row, because those variants rarely share the same numbers.
Where these Ford F-350 figures come from
Every value on this page is loaded from federal open data — EPA fuel economy submissions, NHTSA vehicle and crash-test records, and manufacturer specification filings — rather than dealer listings or copied editorial content. The Ford F-350 record refreshes as the agencies publish, which typically means new model-year rows appear in the autumn and crash-test results follow through the model year as vehicles are tested. Because certification data is filed per configuration, treat any single headline number for this vehicle with caution: the figure that applies to a specific car depends on its engine, drivetrain, body style and model year, all of which are listed separately above. If a number here disagrees with a brochure, the brochure is usually quoting the best available configuration rather than the one being sold.
Frequently Asked Questions About F-350 Gas Tank
How big is the Ford F-350 gas tank?
The Ford F-350 has a 34-gallon fuel tank, or 48 gallons with the optional extended-range tank. Capacity changed between generations — the table above lists it year by year.
How far can the Ford F-350 go on a full tank?
Range depends on the engine and how you drive — multiply the tank size above by your real-world MPG.
How much does it cost to fill up a Ford F-350?
At $3.50 per gallon, filling the 34-gallon tank from empty costs about $119. Multiply the tank size by your local pump price for a current figure.