2026 Buick Encore GX Gas Tank Size & Fuel Capacity
Fuel tank capacity
13.2gal · 50 L
The 2026 Buick Encore GX has a fuel tank capacity of 13.2 gallons (50 liters) on every trim.
A full tank is good for roughly 370–409 highway miles or 343–396 miles around town, going by the EPA ratings.
13.2 gal · Smaller than 91% of 2026 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
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- FAQ
2026 Buick Encore GX fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Powertrain
- no difference
- Drive
- no difference
- Engine
- no difference
All 6 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | Fuel | MPG city / hwy | Range city / hwy |
|---|---|---|---|---|---|---|
| Avenir 4dr SUV 1.3L 3cyl Turbo CVT · FWD · Regular MPG 29 / 31Range 383 / 409 mi | 1.3L 3cyl Turbo CVT | FWD | 13.2 gal50 L | Regular | 29 / 31 | 383 / 409 mi |
| Avenir 4dr SUV AWD 1.3L 3cyl Turbo 9A · AWD · Regular MPG 26 / 28Range 343 / 370 mi | 1.3L 3cyl Turbo 9A | AWD | 13.2 gal50 L | Regular | 26 / 28 | 343 / 370 mi |
| Preferred 4dr SUV 1.2L 3cyl Turbo CVT · FWD · Flex-fuel (gas or E85) MPG 30 / 31Range 396 / 409 mi | 1.2L 3cyl Turbo CVT Flex-fuel | FWD | 13.2 gal50 L | Flex-fuelgas or E85 | 30 / 31 | 396 / 409 mi |
| Preferred 4dr SUV AWD 1.3L 3cyl Turbo 9A · AWD · Regular MPG 26 / 28Range 343 / 370 mi | 1.3L 3cyl Turbo 9A | AWD | 13.2 gal50 L | Regular | 26 / 28 | 343 / 370 mi |
| Sport Touring 4dr SUV 1.3L 3cyl Turbo CVT · FWD · Regular MPG 29 / 31Range 383 / 409 mi | 1.3L 3cyl Turbo CVT | FWD | 13.2 gal50 L | Regular | 29 / 31 | 383 / 409 mi |
| Sport Touring 4dr SUV AWD 1.3L 3cyl Turbo 9A · AWD · Regular MPG 26 / 28Range 343 / 370 mi | 1.3L 3cyl Turbo 9A | AWD | 13.2 gal50 L | Regular | 26 / 28 | 343 / 370 mi |
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG (worked out from the rated MPG where the EPA range wasn't published).
How far a 2026 Buick Encore GX goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 27 MPG, a full 13.2-gallon tank covers about 356 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 13.2 | 370 | 343 |
| 3/4 | 9.9 | 277 | 257 |
| 1/2 | 6.6 | 185 | 172 |
| 1/4 | 3.3 | 92 | 86 |
| 1/8 | 1.7 | 46 | 43 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 556 gallons, roughly 42 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
- EPA combined
- 27–30 MPG
- Tailpipe CO2
- 297–327 g/mi
- EPA greenhouse score
- 5–6 of 10
- Source
- EPA ratings
What it costs to fill up a 2026 Buick Encore GX
$56.36 to fill the 13.2-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 13.2 gal | Regular | $4.27 | $56.36 | $42.27 |
| 13.2 gal | E85 (flex-fuel trims) | $3.31 | $43.69 | $32.77 |
By region, 13.2-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $53.06 |
| Midwest | $4.27 | $56.36 |
| Gulf CoastLowest | $3.70 | $48.84 |
| Rocky Mountain | $4.46 | $58.87 |
| West Coast | $5.42 | $71.54 |
| CaliforniaHighest | $5.89 | $77.75 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Your own price
- 13.2-gallon tank$56.36
- A year of driving (15,000 mi)$2,372
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Encore GX tank size in other years
The 2026 Encore GX uses the same 13.2 gal tank as every Encore GX since 2020.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2026 Encore GX | 13.2 gal | 409 mi |
| 2025 Encore GX | 13.2 gal | 409 mi |
| 2024 Encore GX | 13.2 gal | 422 mi |
| 2023 Encore GX | 13.2 gal | 422 mi |
| 2022 Encore GX | 13.2 gal | 422 mi |
| 2021 Encore GX | 13.2 gal | 409 mi |
2026 Buick Encore GX vs similar 2026 SUVs
At 13.2 gallons, the Encore GX's largest tank ranks second of the seven 2026 SUVs compared here. The Mitsubishi Outlander Sport carries the most (15.8 gal) and the Kia Niro the least (11.1 gal).
| 2026 model | Tank | Longest highway range |
|---|---|---|
| Mitsubishi Outlander Sport | 15.8 gal | 458 mi |
| Buick Encore GX | 13.2 gal | 409 mi |
| Chevrolet Trailblazer | 13.2 gal | 436 mi |
| Toyota Corolla Cross | 12.4–13.2 gal | 409 mi |
| Mazda CX-30 | 12.7 gal | 394 mi |
| Nissan Kicks | 11.9–12.4 gal | 422 mi |
| Kia Niro | 11.1 gal | 599 mi |
Other 2026 SUVs of a similar size, one model per brand.
2026 Buick Encore GX fuel system recalls
None of the 1 recall NHTSA lists for the 2026 Buick Encore GX involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2026 Buick Encore GX?
The 2026 Buick Encore GX holds 13.2 gallons (50 liters) on every trim we list.
How many gallons and liters does the 2026 Buick Encore GX gas tank hold?
The 2026 Buick Encore GX tank holds 50 liters, or 13.2 gallons in US gallons.
Does the 2026 Buick Encore GX tank change with the powertrain?
No. Gas and Flex-fuel (E85) versions of the 2026 Buick Encore GX use the same 13.2 gal tank.
Does AWD change the 2026 Buick Encore GX gas tank?
No. FWD and AWD versions of the 2026 Buick Encore GX use the same 13.2 gal tank.
How far can a 2026 Buick Encore GX go on a full tank?
About 370–409 miles on the highway and 343–396 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2026 Buick Encore GX go on a quarter tank?
About 92 highway miles or 86 in town from the 13.2-gallon tank, which has roughly 3.3 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2026 Buick Encore GX take?
Regular unleaded, or Flex-fuel (unleaded/E85), depending on the engine. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2026 Buick Encore GX?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 13.2-gallon tank from empty costs $56.36. It ranges from $48.84 in the Gulf Coast to $77.75 in California.
How much does a full tank of gas weigh in a 2026 Buick Encore GX?
About 82 pounds for the 13.2-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2026 Buick Encore GX have a bigger gas tank than the Mitsubishi Outlander Sport?
No. The 2026 Mitsubishi Outlander Sport holds up to 15.8 gallons; the 2026 Buick Encore GX holds up to 13.2.
Has the 2026 Buick Encore GX had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2026 Buick Encore GX involve the fuel system.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
- Recalls: NHTSA recall database (Buick fuel system recalls).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.