Subaru Legacy/Outback MPG & Fuel Economy

The 2017 Subaru Legacy/Outback gets up to 29 MPG combined (25 city / 34 highway) in EPA testing.

Latest model year (2017):

The Subaru Legacy/Outback gets up to 29 MPG combined (25 city / 34 highway) in the Auto (AV-S6), 4 cyl, 2.5 L trim.

Verifiedfueleconomy.gov · Verified August 11, 2026

Subaru Legacy/Outback MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2017Auto (AV-S6), 4 cyl, 2.5 L4 2.5LRegular Gasoline253429
2017Auto (AV-S6), 4 cyl, 2.5 L4 2.5LRegular Gasoline253228
2017Auto (AV-S6), 6 cyl, 3.6 L6 3.6LRegular Gasoline202722
2017Auto (AV-S6), 6 cyl, 3.6 L6 3.6LRegular Gasoline202823
2016Auto (AV-S6), 4 cyl, 2.5 L4 2.5LRegular Gasoline253228
2016Auto (AV-S6), 4 cyl, 2.5 L4 2.5LRegular Gasoline263529
2016Auto (AV-S6), 6 cyl, 3.6 L6 3.6LRegular Gasoline202823
2016Auto (AV-S6), 6 cyl, 3.6 L6 3.6LRegular Gasoline202722
2015Auto (AV-S6), 4 cyl, 2.5 L4 2.5LRegular Gasoline253228
2015Auto (AV-S6), 4 cyl, 2.5 L4 2.5LRegular Gasoline263529
2015Auto (AV-S6), 6 cyl, 3.6 L6 3.6LRegular Gasoline202722
2015Auto (AV-S6), 6 cyl, 3.6 L6 3.6LRegular Gasoline202823

Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.

Subaru Legacy/Outback MPG FAQ

What is the MPG of the Subaru Legacy/Outback?

The Subaru Legacy/Outback gets up to 29 MPG combined (25 city / 34 highway) in the 2017 model year. Fuel economy varies by engine and trim — see the full table above for details.

Which Subaru Legacy/Outback trim has the best fuel economy?

The Auto (AV-S6), 4 cyl, 2.5 L trim offers the best combined fuel economy at 29 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

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