2008-2011 Subaru Impreza/Outback Sport MPG & Fuel Cost

EPA rates the 2008-2011 Subaru Impreza/Outback Sport at 19–22 MPG combined across 35 configurations and 4 model years. The most efficient version, the 2011 Impreza 2.5L 4-cyl AWD, is rated 22 MPG (20 city, 27 highway).

Every model year of the 2008-2011 Subaru Impreza/Outback Sport tops out at 22 MPG combined, so no year is better than another.

Yes. Ratings changed in 2009, 2010 and 2011.

The previous generation (2002-2007 Subaru Impreza/Outback Sport) is rated 18–23 MPG combined and costs $2,840–$4,460 a year to fuel; the 2008-2011 model is rated 19–22 MPG and costs $2,940–$4,260 a year.

Driving 15,000 miles a year at regular gasoline $4.36/gal (U.S. average, Sep 2026), the Impreza 2.5L 4-cyl AWD costs about $2,940 a year. Across all 8 configurations the cost runs $2,940–$4,260 a year. That is a $1,320 difference between the cheapest and the costliest configuration.

About $19.60 per 100 miles for the Impreza 2.5L 4-cyl AWD at regular gasoline $4.36/gal (U.S. average, Sep 2026), and between $19.60 and $28.40 across all configurations. That is the annual cost over 15,000 miles divided by 150.

The Impreza 2.5L 4-cyl AWD is rated 20 city and 27 highway MPG, so it is more efficient on the highway, by 7 MPG.

The Impreza 2.5L 4-cyl AWD costs about $2,940 a year to fuel, $180 more than the class median of $2,760, and less than 4 of 10 wagon configurations. The comparison covers all 40 rated wagon configurations for MY2011, not weighted by sales.

The most efficient configuration stays at 22 MPG. Its annual cost goes from $2,970 to $2,940, $30 less. EPA lists 8 configurations for 2011 against 9 configurations for 2010. See the 2010 Subaru Impreza/Outback Sport for that year.