2015 GMC Yukon XL Gas Tank Size & Fuel Capacity
Fuel tank capacity
31.0gal · 117 L
The 2015 GMC Yukon XL has a fuel tank capacity of 31.0 gallons (117 liters) on every trim.
A full tank is good for roughly 620–713 highway miles or 434–496 miles around town, going by the EPA ratings.
31.0 gal · Bigger than 94% of 2015 models we list.
Listed separately: 2015 GMC Yukon (26.0 gal).
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- Pump & gauge parts
- FAQ
2015 GMC Yukon XL 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 |
|---|---|---|---|---|---|---|
| Denali 4dr SUV 6.2L 8cyl 8A · RWD · Premium (recommended) MPG 15 / 21Range 465 / 651 mi | 6.2L 8cyl 8A | RWD | 31.0 gal117 L | Premiumrecommended | 15 / 21 | 465 / 651 mi |
| Denali 4dr SUV 4WD 6.2L 8cyl 8A · 4WD · Premium (recommended) MPG 14 / 20Range 434 / 620 mi | 6.2L 8cyl 8A | 4WD | 31.0 gal117 L | Premiumrecommended | 14 / 20 | 434 / 620 mi |
| SLE 4dr SUV 5.3L 8cyl 6A · RWD · Flex-fuel (gas or E85) MPG 16 / 23Range 496 / 713 mi | 5.3L 8cyl 6A Flex-fuel | RWD | 31.0 gal117 L | Flex-fuelgas or E85 | 16 / 23 | 496 / 713 mi |
| SLE 4dr SUV 4WD 5.3L 8cyl 6A · 4WD · Flex-fuel (gas or E85) MPG 15 / 22Range 465 / 682 mi | 5.3L 8cyl 6A Flex-fuel | 4WD | 31.0 gal117 L | Flex-fuelgas or E85 | 15 / 22 | 465 / 682 mi |
| SLT 4dr SUV 5.3L 8cyl 6A · RWD · Flex-fuel (gas or E85) MPG 16 / 23Range 496 / 713 mi | 5.3L 8cyl 6A Flex-fuel | RWD | 31.0 gal117 L | Flex-fuelgas or E85 | 16 / 23 | 496 / 713 mi |
| SLT 4dr SUV 4WD 5.3L 8cyl 6A · 4WD · Flex-fuel (gas or E85) MPG 15 / 22Range 465 / 682 mi | 5.3L 8cyl 6A Flex-fuel | 4WD | 31.0 gal117 L | Flex-fuelgas or E85 | 15 / 22 | 465 / 682 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.
How far a 2015 GMC Yukon XL 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 18 MPG, a full 31.0-gallon tank covers about 558 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 31.0 | 713 | 496 |
| 3/4 | 23.3 | 535 | 372 |
| 1/2 | 15.5 | 357 | 248 |
| 1/4 | 7.8 | 178 | 124 |
| 1/8 | 3.9 | 89 | 62 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 833 gallons, roughly 27 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.
What it costs to fill up a 2015 GMC Yukon XL
$132.37 to fill the 31.0-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 |
|---|---|---|---|---|
| 31.0 gal | Regular | $4.27 | $132.37 | $99.28 |
| 31.0 gal | Premium | $5.28 | $163.68 | $122.76 |
| 31.0 gal | E85 (flex-fuel trims) | $3.31 | $102.61 | $76.96 |
By region, 31.0-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $124.62 |
| Midwest | $4.27 | $132.37 |
| Gulf CoastLowest | $3.70 | $114.70 |
| Rocky Mountain | $4.46 | $138.26 |
| West Coast | $5.42 | $168.02 |
| CaliforniaHighest | $5.89 | $182.59 |
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
- 31.0-gallon tank$132.37
- A year of driving (15,000 mi)$3,558
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Yukon XL tank size in other years
The 2015 Yukon XL uses the same 31.0 gal tank as the 2014 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2020 Yukon XL | 31.0 gal | 713 mi |
| 2019 Yukon XL | 31.0 gal | 713 mi |
| 2018 Yukon XL | 31.0 gal | 713 mi |
| 2017 Yukon XL | 31.0 gal | 713 mi |
| 2016 Yukon XL | 31.0 gal | 713 mi |
| 2015 Yukon XL | 31.0 gal | 713 mi |
| 2014 Yukon XL | 31.0 gal | 651 mi |
| 2013 Yukon XL | 31.0–39.0 gal | 651 mi |
| 2012 Yukon XL | 31.0–39.0 gal | 651 mi |
| 2011 Yukon XL | 31.0–39.0 gal | 651 mi |
| 2010 Yukon XL | 31.0–39.0 gal | 651 mi |
- 2027
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2015 GMC Yukon XL vs similar 2015 SUVs
At 31.0 gallons, the Yukon XL's largest tank ranks second of the three 2015 SUVs compared here. The Ford Expedition carries the most (33.5 gal) and the Chevrolet Suburban the least (31.0 gal).
| 2015 model | Tank | Longest highway range |
|---|---|---|
| Ford Expedition | 28.0–33.5 gal | 704 mi |
| GMC Yukon XL | 31.0 gal | 713 mi |
| Chevrolet Suburban | 31.0 gal | 713 mi |
Other 2015 SUVs of a similar size, one model per brand.
2015 GMC Yukon XL fuel system recalls
None of the 2 recalls NHTSA lists for the 2015 GMC Yukon XL involve the fuel system.
2015 GMC Yukon XL fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2015 GMC Yukon XL, so a failed pump or gauge is a normal repair. These are the part numbers the makers list for it.
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Frequently asked questions
What is the fuel tank capacity of the 2015 GMC Yukon XL?
The 2015 GMC Yukon XL holds 31.0 gallons (117 liters) on every trim we list.
How many gallons and liters does the 2015 GMC Yukon XL gas tank hold?
The 2015 GMC Yukon XL tank holds 117 liters, or 31.0 gallons in US gallons.
Does the 2015 GMC Yukon XL tank change with the powertrain?
No. Flex-fuel (E85) and Gas versions of the 2015 GMC Yukon XL use the same 31.0 gal tank.
Does 4WD change the 2015 GMC Yukon XL gas tank?
No. RWD and 4WD versions of the 2015 GMC Yukon XL use the same 31.0 gal tank.
How far can a 2015 GMC Yukon XL go on a full tank?
About 620–713 miles on the highway and 434–496 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 2015 GMC Yukon XL go on a quarter tank?
About 178 highway miles or 124 in town from the 31.0-gallon tank, which has roughly 7.8 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2015 GMC Yukon XL take?
Flex-fuel (unleaded/E85), or Premium unleaded (recommended), depending on the engine. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2015 GMC Yukon XL?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 31.0-gallon tank from empty costs $132.37. It ranges from $114.70 in the Gulf Coast to $182.59 in California.
How much does a full tank of gas weigh in a 2015 GMC Yukon XL?
About 192 pounds for the 31.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2015 GMC Yukon XL have a bigger gas tank than the Chevrolet Suburban?
No, they match: both top out at 31.0 gallons in 2015.
Has the 2015 GMC Yukon XL had a fuel pump or fuel system recall?
No. None of the 2 recalls NHTSA lists for the 2015 GMC Yukon XL 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. 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 (GMC 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.