How many gallons of gas does a 2017 Subaru Outback hold?
The 2017 Subaru Outback holds 18.5 gallons of fuel in its gas tank, which is the total tank capacity. This figure is the same across the main trims for that model year, with the usable fuel typically running slightly less depending on reserves and gauge design. In practice, drivers can expect roughly half a thousand miles of range on a full tank, depending on engine and driving conditions.
Tank capacity by model year and engine
For 2017, Subaru offered the Outback with a 2.5-liter four-cylinder engine and, in higher trims, a 3.6-liter six-cylinder. Regardless of engine, the vehicle’s total fuel tank capacity remains 18.5 gallons (about 70 liters), providing a consistent upper limit for fuel on a full tank.
Impact on driving range
Estimated range depends on the engine and EPA fuel economy. The 2.5L model typically achieves about 28 miles per gallon combined, equating to roughly 518 miles on a full 18.5-gallon tank. Real-world range varies with driving style, terrain, cargo load, and whether the vehicle is driven mainly on city streets or highways. The 3.6L engine generally yields lower mpg, which reduces per-tank range even though the tank size is the same.
Practical notes for planning fuel use
When planning trips, treat 18.5 gallons as the maximum fill level. Most drivers will not utilize every drop due to reserve considerations and how the fuel gauge is calibrated. For exact figures tailored to your specific vehicle configuration, consult the owner’s manual or your Subaru dealer.
Summary
The 2017 Subaru Outback’s fuel tank capacity is 18.5 gallons (about 70 liters). With typical mpg for the 2.5L version, this corresponds to an approximate range of 500–520 miles per full tank, though actual range varies by engine, driving conditions, and load.
