Subaru Ascent Fuel Tank Capacity
How big is the gas tank on a 2027 Subaru Ascent?
The 2027 Subaru Ascent has a 19.3-gallon fuel tank, good for roughly 425 miles of range at 22 MPG combined.
Latest model year (2027):
The Subaru Ascent holds 19.3 gallons of fuel. At 22 MPG combined that is roughly 425 miles of range on a full tank.
Subaru Ascent Gas Tank — All Years
| Year | Tank Capacity | Optional Tank | Combined MPG | Est. Range |
|---|---|---|---|---|
| 2027 | 19.3 gal | — | 22 | 425 mi |
| 2026 | 19.3 gal | — | 22 | 425 mi |
| 2025 | 19.3 gal | — | 22 | 425 mi |
| 2024 | 19.3 gal | — | 22 | 425 mi |
| 2023 | 19.3 gal | — | 22 | 425 mi |
| 2022 | 19.3 gal | — | 23 | 444 mi |
| 2021 | 19.3 gal | — | 23 | 444 mi |
| 2020 | 19.3 gal | — | 23 | 444 mi |
| 2019 | 19.3 gal | — | 23 | 444 mi |
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.
Subaru Ascent data analysis
How Subaru Ascent fuel tank capacity varies
Across 9 configurations recorded for the 2019 through 2027 Subaru Ascent, fuel tank capacity runs from 19.3 gallons to 19.3 gallons. The strongest figure belongs to the 2019 Subaru Ascent (Standard) at 19.3 gallons, and the weakest to the 2027 car (Standard) at 19.3 gallons — a spread of 0%. The narrow spread means any year of the Subaru Ascent 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 2027
Average fuel tank capacity for the 2027 Subaru Ascent is 19.3 gallons, against 19.3 gallons for the 2026 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 Subaru Ascent data
This page lists every 2019 through 2027 Subaru Ascent record we hold for this measurement — 9 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 Subaru Ascent numbers
The 2019 through 2027 Subaru Ascent entries here span 9 model years of published measurements for this figure. 2027 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 Subaru Ascent 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 Subaru Ascent 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 Ascent Gas Tank
How big is the Subaru Ascent gas tank?
The Subaru Ascent has a 19.3-gallon fuel tank. Capacity changed between generations — the table above lists it year by year.
How far can the Subaru Ascent go on a full tank?
At roughly 22 MPG combined, a full 19.3-gallon tank is good for about 425 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 Subaru Ascent?
At $3.50 per gallon, filling the 19.3-gallon tank from empty costs about $68. Multiply the tank size by your local pump price for a current figure.