2017 Subaru Legacy/Outback Specs: MPG, Gas Mileage, Engine Size & Dimensions
2017 Subaru Legacy/Outback Specs at a Glance
The 2017 Subaru Legacy/Outback gets 29 mpg combined on the 2.5L All-Wheel Drive configuration. Figures are per configuration, not a single official number — other trims rate as low as 22 mpg combined. Every figure below comes from EPA, NHTSA, or manufacturer published data — no estimates.
- Combined MPG
- 29 mpg (25 city / 34 hwy)
- Best configuration: 2.5L · All-Wheel Drive · Automatic (AV-S6) · other 2017 trims rate 22–29 mpg combined
- Engine
- 2.5L 4-cyl
- 2.5L · All-Wheel Drive · Automatic (AV-S6) · 2 powertrains offered
2017 Subaru Legacy/Outback trims and MPG
| Trim | Engine | Trans | Drive | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Auto (AV-S6), 4 cyl, 2.5 L | 4 · 2.5L | Automatic (AV-S6) | All-Wheel Drive | 25 | 34 | 29 |
| Auto (AV-S6), 4 cyl, 2.5 L | 4 · 2.5L | Automatic (AV-S6) | All-Wheel Drive | 25 | 32 | 28 |
| Auto (AV-S6), 6 cyl, 3.6 L | 6 · 3.6L | Automatic (AV-S6) | All-Wheel Drive | 20 | 27 | 22 |
| Auto (AV-S6), 6 cyl, 3.6 L | 6 · 3.6L | Automatic (AV-S6) | All-Wheel Drive | 20 | 28 | 23 |
Detailed Specifications
MPG & Fuel Economy
MPG for every year and trim
View details →Engine Specifications
Engine Specs for every year and trim
View details →Annual Fuel Cost
Fuel Cost for every year and trim
View details →Transmission Specifications
Transmission for every year and trim
View details →Drivetrain & Drive Type
Drivetrain for every year and trim
View details →Vehicle Class & EPA Size Category
Vehicle Class for every year and trim
View details →Maintenance Schedule & Service Intervals
Maintenance for every year and trim
View details →Subaru Legacy/Outback — All Years Overview
| Year | Trim | Engine | Trans | Drive | City | Hwy | Combined | Fuel |
|---|---|---|---|---|---|---|---|---|
| 2017 | Auto (AV-S6), 4 cyl, 2.5 L | 4 · 2.5L | Automatic (AV-S6) | All-Wheel Drive | 25 | 34 | 29 | Regular Gasoline |
| 2017 | Auto (AV-S6), 4 cyl, 2.5 L | 4 · 2.5L | Automatic (AV-S6) | All-Wheel Drive | 25 | 32 | 28 | Regular Gasoline |
| 2017 | Auto (AV-S6), 6 cyl, 3.6 L | 6 · 3.6L | Automatic (AV-S6) | All-Wheel Drive | 20 | 27 | 22 | Regular Gasoline |
| 2017 | Auto (AV-S6), 6 cyl, 3.6 L | 6 · 3.6L | Automatic (AV-S6) | All-Wheel Drive | 20 | 28 | 23 | Regular Gasoline |
| 2016 | Auto (AV-S6), 4 cyl, 2.5 L | 4 · 2.5L | Automatic (AV-S6) | All-Wheel Drive | 25 | 32 | 28 | Regular Gasoline |
| 2016 | Auto (AV-S6), 4 cyl, 2.5 L | 4 · 2.5L | Automatic (AV-S6) | All-Wheel Drive | 26 | 35 | 29 | Regular Gasoline |
| 2016 | Auto (AV-S6), 6 cyl, 3.6 L | 6 · 3.6L | Automatic (AV-S6) | All-Wheel Drive | 20 | 28 | 23 | Regular Gasoline |
| 2016 | Auto (AV-S6), 6 cyl, 3.6 L | 6 · 3.6L | Automatic (AV-S6) | All-Wheel Drive | 20 | 27 | 22 | Regular Gasoline |
| 2015 | Auto (AV-S6), 4 cyl, 2.5 L | 4 · 2.5L | Automatic (AV-S6) | All-Wheel Drive | 25 | 32 | 28 | Regular Gasoline |
| 2015 | Auto (AV-S6), 4 cyl, 2.5 L | 4 · 2.5L | Automatic (AV-S6) | All-Wheel Drive | 26 | 35 | 29 | Regular Gasoline |
| 2015 | Auto (AV-S6), 6 cyl, 3.6 L | 6 · 3.6L | Automatic (AV-S6) | All-Wheel Drive | 20 | 27 | 22 | Regular Gasoline |
| 2015 | Auto (AV-S6), 6 cyl, 3.6 L | 6 · 3.6L | Automatic (AV-S6) | All-Wheel Drive | 20 | 28 | 23 | Regular Gasoline |
Compare across every brand
All Subaru Legacy/Outback specifications
Subaru Legacy/Outback — Frequently Asked Questions
What is the fuel economy of the 2017 Subaru Legacy/Outback?
The Subaru Legacy/Outback is EPA-rated at up to 29 MPG combined (25 city / 34 highway).
What engine does the 2017 Subaru Legacy/Outback have?
The Subaru Legacy/Outback uses a 2.5L 4-cylinder engine paired with an Automatic transmission.
What years of the Subaru Legacy/Outback are covered here?
This page documents 12 verified Subaru Legacy/Outback configurations across model years 2015–2017.
Which model year of the Subaru Legacy/Outback is the most fuel efficient?
Every documented Subaru Legacy/Outback model year lands on the same 29 MPG combined peak, so fuel economy is not a reason to prefer one year over another.
How many engine options does the Subaru Legacy/Outback have?
The records list 2 distinct displacements for the Subaru Legacy/Outback — 2.5L, 3.6L — which is why combined MPG varies between trims of the same year.
Is the 2017 Subaru Legacy/Outback front-wheel drive or all-wheel drive?
Every Subaru Legacy/Outback configuration on record here is All-Wheel Drive; no alternative drivetrain appears in the 2015–2017 data.