What size gas tank does a Subaru Outback have?
The typical fuel tank capacity for modern Subaru Outback models is 18.5 gallons (70 liters).
This article explains the standard tank size, how it applies to current and recent generations, and how that capacity translates into real-world driving range. It also covers how to verify the exact figure for your specific year and trim.
Official capacity and practical implications
Most recent Outback generations share the same basic tank size, but you should confirm the exact figure for your specific model year and trim through official documentation or the owner's manual.
- Most modern Outbacks (2010s–present): 18.5 gallons (70 L)
- Notes: Small variations can occur by market or production run; always verify with your year’s official specifications.
These common specifications come from Subaru’s published data and are cited in brochures and owner resources for contemporary models.
Driving range and fuel economy considerations
Fuel economy varies by engine choice, drivetrain, and driving conditions. The 18.5-gallon tank translates into different driving ranges depending on miles-per-gallon (mpg) achieved in mixed driving. Use the following rough guide to estimate range per tank.
- Estimated range per tank is roughly 450–600 miles (720–965 kilometers) depending on mpg and driving style.
In practice, a typical mixed-driving mpg figure in the Outback’s common range would place most drivers near the lower end of that estimate in city-heavy conditions and closer to the upper end on steady highway trips. Always consult your trip computer or EPA ratings for a live estimate based on your driving habits.
How to verify the exact fuel-tank size for your vehicle
Check your vehicle’s owner’s manual, the fuel-cap label, or Subaru’s official brochure for the precise fuel-tank capacity for your specific year and trim. If you’re evaluating a used Outback, a dealership or service manual can confirm the exact figure if it differs from the general standard.
Summary
The Subaru Outback commonly features an 18.5-gallon (70-liter) fuel tank across modern models. This capacity, combined with engine choice and driving style, determines how far you can travel on a single tank—roughly in the 450–600 mile range depending on conditions. For the most accurate figure, verify the exact specification for your model year and trim.
