2011 Subaru Outback Gas Tank Size & Fuel Capacity
Fuel tank capacity
18.5gal · 70 L
The 2011 Subaru Outback has a fuel tank capacity of 18.5 gallons (70 liters) on every trim.
A full tank is good for roughly 463–537 highway miles or 333–407 miles around town, going by the EPA ratings.
18.5 gal · Smaller than 59% of 2011 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
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- Pump & gauge parts
- FAQ
2011 Subaru Outback fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
- no difference
All 8 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 2.5i 4dr SUV AWD 2.5L 4cyl 6M · AWD MPG 19 / 27Range 352 / 500 mi | 2.5L 4cyl 6M | AWD | 18.5 gal70 L | 19 / 27 | 352 / 500 mi | |
| 2.5i 4dr SUV AWD 2.5L 4cyl CVT · AWD MPG 22 / 29Range 407 / 537 mi | 2.5L 4cyl CVT | AWD | 18.5 gal70 L | 22 / 29 | 407 / 537 mi | |
| 2.5i Limited 4dr SUV AWD 2.5L 4cyl CVT · AWD MPG 22 / 29Range 407 / 537 mi | 2.5L 4cyl CVT | AWD | 18.5 gal70 L | 22 / 29 | 407 / 537 mi | |
| 2.5i Premium 4dr SUV AWD 2.5L 4cyl 6M · AWD MPG 19 / 27Range 352 / 500 mi | 2.5L 4cyl 6M | AWD | 18.5 gal70 L | 19 / 27 | 352 / 500 mi | |
| 2.5i Premium 4dr SUV AWD 2.5L 4cyl CVT · AWD MPG 22 / 29Range 407 / 537 mi | 2.5L 4cyl CVT | AWD | 18.5 gal70 L | 22 / 29 | 407 / 537 mi | |
| 3.6R 4dr SUV AWD 3.6L 6cyl 5A · AWD MPG 18 / 25Range 333 / 463 mi | 3.6L 6cyl 5A | AWD | 18.5 gal70 L | 18 / 25 | 333 / 463 mi | |
| 3.6R Limited 4dr SUV AWD 3.6L 6cyl 5A · AWD MPG 18 / 25Range 333 / 463 mi | 3.6L 6cyl 5A | AWD | 18.5 gal70 L | 18 / 25 | 333 / 463 mi | |
| 3.6R Premium 4dr SUV AWD 3.6L 6cyl 5A · AWD MPG 18 / 25Range 333 / 463 mi | 3.6L 6cyl 5A | AWD | 18.5 gal70 L | 18 / 25 | 333 / 463 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 2011 Subaru Outback 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 24 MPG, a full 18.5-gallon tank covers about 444 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 18.5 | 537 | 407 |
| 3/4 | 13.9 | 402 | 305 |
| 1/2 | 9.3 | 268 | 204 |
| 1/4 | 4.6 | 134 | 102 |
| 1/8 | 2.3 | 67 | 51 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 625 gallons, roughly 34 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 2011 Subaru Outback
$78.99 to fill the 18.5-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 |
|---|---|---|---|---|
| 18.5 gal | Regular | $4.27 | $78.99 | $59.25 |
By region, 18.5-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $74.37 |
| Midwest | $4.27 | $78.99 |
| Gulf CoastLowest | $3.70 | $68.45 |
| Rocky Mountain | $4.46 | $82.51 |
| West Coast | $5.42 | $100.27 |
| CaliforniaHighest | $5.89 | $108.96 |
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
- 18.5-gallon tank$78.99
- A year of driving (15,000 mi)$2,669
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Outback tank size in other years
The 2011 Outback uses the same 18.5 gal tank as the 2010 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2016 Outback | 18.5 gal | 611 mi |
| 2015 Outback | 18.5 gal | 611 mi |
| 2014 Outback | 18.5 gal | 555 mi |
| 2013 Outback | 18.5 gal | 555 mi |
| 2012 Outback | 18.5 gal | 537 mi |
| 2011 Outback | 18.5 gal | 537 mi |
| 2010 Outback | 18.5 gal | 537 mi |
| 2009 Outback | 16.9 gal | 456 mi |
| 2008 Outback | 16.9 gal | 439 mi |
| 2007 Outback | 16.9 gal | 439 mi |
| 2006 Outback | 16.9 gal | 439 mi |
- 2026
- 2025
- 2024
- 2023
- 2022
- 2021
- 2020
- 2019
- 2018
- 2017
- 2016
- 2015
- 2014
- 2013
- 2012
- 2011
- 2010
- 2009
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- 2000
2011 Subaru Outback vs similar 2011 SUVs
At 18.5 gallons, the Outback's largest tank ranks second of the seven 2011 SUVs compared here. The Chevrolet Equinox carries the most (18.8 gal) and the Honda CR-V the least (15.3 gal).
| 2011 model | Tank | Longest highway range |
|---|---|---|
| Chevrolet Equinox | 18.8 gal | 602 mi |
| Subaru Outback | 18.5 gal | 537 mi |
| Mazda CX-7 | 16.4–18.2 gal | 459 mi |
| Mitsubishi Outlander | 15.8–16.6 gal | 465 mi |
| Toyota RAV4 | 15.9 gal | 445 mi |
| Nissan Rogue | 15.9 gal | 445 mi |
| Honda CR-V | 15.3 gal | 428 mi |
Other 2011 SUVs of a similar size, one model per brand.
2011 Subaru Outback fuel system recalls
None of the 16 recalls NHTSA lists for the 2011 Subaru Outback involve the fuel system.
2011 Subaru Outback fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2011 Subaru Outback, 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 2011 Subaru Outback?
The 2011 Subaru Outback holds 18.5 gallons (70 liters) on every trim we list.
How many gallons and liters does the 2011 Subaru Outback gas tank hold?
The 2011 Subaru Outback tank holds 70 liters, or 18.5 gallons in US gallons.
How far can a 2011 Subaru Outback go on a full tank?
About 463–537 miles on the highway and 333–407 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 2011 Subaru Outback go on a quarter tank?
About 134 highway miles or 102 in town from the 18.5-gallon tank, which has roughly 4.6 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2011 Subaru Outback take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2011 Subaru Outback?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 18.5-gallon tank from empty costs $78.99. It ranges from $68.45 in the Gulf Coast to $108.96 in California.
How much does a full tank of gas weigh in a 2011 Subaru Outback?
About 115 pounds for the 18.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2011 Subaru Outback have a bigger gas tank than the Toyota RAV4?
Yes. The 2011 Subaru Outback holds up to 18.5 gallons; the 2011 Toyota RAV4 holds up to 15.9.
Has the 2011 Subaru Outback had a fuel pump or fuel system recall?
No. None of the 16 recalls NHTSA lists for the 2011 Subaru Outback 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 (Subaru 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.