22 MPG combined: for many vehicles, that number would be a disappointment. But for the 2018 Subaru Outback AWD 3.6L 6-cyl, it’s an accepted compromise. This isn’t a vehicle purchased by hypermilers chasing every tenth of a mile per gallon. This is a vehicle for those who prioritize reliable capability, all-weather confidence, and cargo space over outright fuel efficiency. They know they could get better mileage elsewhere, but they’re willing to trade that for the Outback’s unique blend of practicality and go-anywhere spirit.

City and highway performance

The EPA estimates the 2018 Subaru Outback 3.6R gets 20 MPG in the city and 27 MPG on the highway. The city number reflects the six-cylinder engine’s thirst for fuel in stop-and-go driving, where its 256 horsepower is rarely fully used. The highway figure is more respectable, though still not class-leading. The automatic transmission (AV-S6) helps optimize fuel economy at cruising speeds, but the full-time all-wheel-drive system, a hallmark of Subaru, contributes to parasitic losses that impact efficiency. It is important to factor in that this Outback variant has a larger engine than the base model, which produces more power with a decrease of fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Subaru Outback 3.6R at $2,000. This figure is based on driving 15,000 miles per year and using national average fuel prices. Of course, that number will vary depending on your individual driving habits and the price of gasoline in your area. If you drive predominantly in the city or have a heavy foot, you can expect to spend more. Conversely, longer highway trips at consistent speeds will likely result in lower fuel costs. It’s also important to consider fuel prices in your specific region when evaluating the potential long-term cost of ownership.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy often differs. Many drivers average around 21-24 MPG in mixed driving conditions according to reports. Factors such as driving style, tire pressure, maintenance, and the type of terrain can all influence fuel consumption. If you regularly carry heavy loads or frequently drive on challenging roads, your fuel economy will likely be lower than the EPA estimates. Always check the OUTBACK MPG across all years.

How it compares

Compared to other vehicles in its class and price range, the 2018 Subaru Outback 3.6R’s fuel economy is mid-pack. The four-cylinder Outback achieves significantly better mileage, around 28 MPG combined, appealing to those prioritizing less gas. A competitor like the Toyota RAV4 (around 25-27 MPG combined, depending on the trim and year) offers better fuel economy, but lacks the Outback’s standard all-wheel drive and ground clearance. A V6-equipped Honda Passport mirrors the Outback in MPG ratings, but is negligibly larger in size and price. The added power of the 3.6-liter and the Subaru’s legendary AWD system are the main reasons potential buyers are willing to compromise on fuel economy.

Tips to maximize efficiency

Gentle acceleration and smooth braking are key to maximizing fuel economy in the 2018 Outback 3.6R. Avoid aggressive driving habits and maintain a steady speed whenever possible. Anticipate traffic flow and minimize unnecessary stops and starts.

Proper tire inflation plays a significant role in fuel efficiency. Check your tire pressure regularly and inflate your tires to the recommended pressure indicated on the door jamb. Underinflated tires can increase rolling resistance and decrease fuel economy.

Reduce unnecessary weight. The more weight you carry in your vehicle, the more fuel it consumes. Remove any items from your cargo area that you don’t need. Roof racks, while convenient, also increase aerodynamic drag, so remove them when they are not in use.

Regular maintenance is critical. Keep your engine properly tuned and ensure that all scheduled maintenance is performed on time. Replace air filters and spark plugs as recommended to maintain optimal engine performance. The difference in MPG produced by a properly tuned engine, or a poorly maintained one, is significant.

Consider using cruise control on the highway. Cruise control helps maintain a consistent speed, which can improve fuel economy on long trips. However, be mindful of hilly terrains, as excessive downshifting can negate the benefits of cruise control. If you want to know more about all Subaru fuel economy data visit Subaru.