GMC Yukon Fuel Tank Capacity
How big is the gas tank on a 2026 GMC Yukon?
The 2026 GMC Yukon has a 24-gallon fuel tank (28 gallons with the optional extended-range tank), good for roughly 432 miles of range at 18 MPG combined.
Latest model year (2026):
The GMC Yukon holds 24 gallons of fuel, or 28 gallons with the optional extended-range tank. At 18 MPG combined that is roughly 432 miles of range on a full tank.
GMC Yukon Gas Tank — All Years
| Year | Tank Capacity | Optional Tank | Combined MPG | Est. Range |
|---|---|---|---|---|
| 2026 | 24 gal | 28 gal | 18 | 432 mi |
| 2025 | 24 gal | 28 gal | 19 | 456 mi |
| 2024 | 24 gal | 28 gal | 19 | 456 mi |
| 2023 | 24 gal | 28 gal | 20 | 480 mi |
| 2022 | 24 gal | 28 gal | — | — |
| 2021 | 24 gal | 28 gal | — | — |
| 2020 | 26 gal | — | — | — |
| 2019 | 26 gal | — | — | — |
| 2018 | 26 gal | — | — | — |
| 2017 | 26 gal | — | — | — |
| 2016 | 26 gal | — | — | — |
| 2015 | 26 gal | — | — | — |
Manufacturer specification data sourced from Manufacturer specifications, last verified August 12, 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.
GMC Yukon data analysis
How GMC Yukon fuel tank capacity varies
Across 12 configurations recorded for the 2015 through 2026 GMC Yukon, fuel tank capacity runs from 24 gallons to 26 gallons. The strongest figure belongs to the 2015 GMC Yukon (Standard) at 26 gallons, and the weakest to the 2026 car (Standard) at 24 gallons — a spread of 8%. The narrow spread means any year of the GMC Yukon 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 GMC Yukon is 24 gallons, against 24 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 GMC Yukon data
This page lists every 2015 through 2026 GMC Yukon record we hold for this measurement — 12 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.
Configurations behind these GMC Yukon numbers
The 2015 through 2026 GMC Yukon entries here span 12 model years of published measurements for this figure. 2026 is the busiest model year in the record with 1 separate measured configuration, which is why a single quoted fuel tank capacity figure for that year is rarely the one that matches the car in front of you. Match the row to the exact drivetrain, body style and engine on the window sticker or VIN before relying on the number, and use the comparison links below to see how those same configurations line up against rival models.
Where these GMC Yukon 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 GMC Yukon 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 Yukon Gas Tank
How big is the GMC Yukon gas tank?
The GMC Yukon has a 24-gallon fuel tank, or 28 gallons with the optional extended-range tank. Capacity changed between generations — the table above lists it year by year.
How far can the GMC Yukon go on a full tank?
At roughly 19 MPG combined, a full 24-gallon tank is good for about 456 miles. Plan on refueling near 300 miles, since most fuel gauges read empty with 1–2 gallons still in the tank.
How much does it cost to fill up a GMC Yukon?
At $3.50 per gallon, filling the 24-gallon tank from empty costs about $84. Multiply the tank size by your local pump price for a current figure.