27 MPG combined isn’t likely to set any records, but it’s a respectable figure for the 2015 Subaru Outback 2.5i. This isn’t a hybrid, nor is it a compact hatchback. It’s a mid-size wagon with standard all-wheel drive, generous cargo space, and enough ground clearance to tackle moderate off-road trails. That 27 MPG figure represents a balance, a compromise between capability and efficiency that clearly appeals to a specific type of buyer.

City and highway performance

The EPA breaks down that 27 MPG combined rating into 25 MPG in the city and 32 MPG on the highway. The city figure is perhaps the more telling number. All-wheel drive systems, even efficient ones like Subaru’s, add weight and mechanical drag. This impacts stop-and-go driving disproportionately compared to steady-state highway cruising. That 32 MPG highway figure is achievable, even realistic, on long road trips, provided you keep your speed in check.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Subaru Outback 2.5i at $1,944. This figure is based on driving 15,000 miles per year and using national average fuel prices. Remember that your actual fuel costs will vary depending on your driving habits, the type of roads you drive on, and the price of gasoline in your area. Aggressive driving, frequent short trips in cold weather, and sustained high speeds will all decrease fuel economy and increase your annual fuel bill. Based on average usage, that $1,944 figure provides a solid benchmark for comparison.

Real-world expectations

While the EPA numbers provide a good baseline, real-world fuel economy for the 2015 Subaru Outback 2.5i often falls slightly below the official ratings. Owners commonly report combined fuel economy in the 24-28 MPG range. This variance can be attributed to factors like driving style, terrain, and the use of accessories like roof racks, which increase aerodynamic drag. The Outback’s all-wheel-drive system is always engaged, unlike some systems that only activate when needed. This constant engagement provides superior traction, but it also contributes to slightly lower fuel economy compared to front-wheel-drive competitors.

How it compares

The Outback’s fuel economy stacks up reasonably well against its AWD wagon competition from this era. The BMW 328i xDrive wagon, for instance, was EPA-rated at 22 MPG city and 33 MPG highway. The Volvo XC70 offered similar capability, but lagged behind in MPG. Buyers seeking more efficiency might consider alternatives such as the Toyota RAV4 Hybrid from the same model year, which boasts excellent ratings and comparable cargo space. However, it lacks the Outback’s off-road credentials. To see all Subaru fuel economy data, you can visit our make page. Buyers who have already decided that the Outback’s blend of capability and practicality is right for them are less concerned with chasing the absolute highest MPG figure, but for those still deciding, it is an important consideration. Compare this year’s MPG to older models by referencing the OUTBACK MPG across all years.

Tips to maximize efficiency

Gentle acceleration and smooth braking are key to maximizing fuel economy in the Outback. Avoid aggressive starts and hard stops, as these actions waste fuel and put unnecessary strain on the engine and drivetrain. Anticipate traffic conditions and maintain a consistent speed whenever possible.

Regular maintenance is essential for optimal fuel economy. Keep your tires properly inflated, as underinflated tires increase rolling resistance. Change your engine oil and air filter according to the manufacturer’s recommendations. A well-maintained engine runs more efficiently and consumes less fuel.

Minimize the use of accessories that consume energy, such as air conditioning and headlights. While these are necessary for comfort and safety, using them sparingly can help improve fuel economy. Consider opening the windows instead of using air conditioning on mild days, and turn off headlights when they are not needed.

Reduce unnecessary weight in your vehicle. Carrying extra cargo increases fuel consumption, so remove any items that you don’t need. A roof rack, while useful for carrying luggage, will significantly increase the vehicle’s wind resistance, further reducing fuel economy.

Plan your routes carefully to avoid traffic congestion and minimize stop-and-go driving. Use navigation apps to find the most efficient route and avoid areas with heavy traffic. Driving at off-peak hours can also help improve fuel economy.