Subaru WRX STI MPG by Year & Engine (EPA)
EPA fuel-economy ratings for every rated Subaru WRX STI model year from 2015 to 2026 — each engine and transmission with its official city, highway and combined figures. Over these years the WRX STI has been offered with 2.4L 4-cyl, 2.0L 4-cyl, 2.5L 4-cyl engines; the most efficient version is the 2015 (up to 24 MPG combined). Every rated gas version calls for premium gasoline. Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.
Subaru WRX STI fuel economy by year
| Year | Combined | Engines | Median used price | For sale |
|---|---|---|---|---|
| 2026 | 21–22 MPG | 2.4L 4-cyl | — | — |
| 2025 | 21–22 MPG | 2.4L 4-cyl | — | — |
| 2024 | 21–22 MPG | 2.4L 4-cyl | — | — |
| 2023 | 21–22 MPG | 2.4L 4-cyl | — | — |
| 2022 | 21–22 MPG | 2.4L 4-cyl | — | — |
| 2021 | 18–23 MPG | 2.0L 4-cyl, 2.5L 4-cyl | $32,977 | 41 listings |
| 2020 | 19–23 MPG | 2.0L 4-cyl, 2.5L 4-cyl | $30,400 | 37 listings |
| 2019 | 19–23 MPG | 2.0L 4-cyl, 2.5L 4-cyl | $25,995 | 30 listings |
| 2018 | 18 MPG | 2.5L 4-cyl | $23,990 | 25 listings |
| 2017 | 19–23 MPG | 2.0L 4-cyl, 2.5L 4-cyl | $20,920 | 43 listings |
| 2016 | 19–23 MPG | 2.0L 4-cyl, 2.5L 4-cyl | $21,450 | 32 listings |
| 2015 | 19–24 MPG | 2.0L 4-cyl, 2.5L 4-cyl | $18,995 | 26 listings |
2026 Subaru WRX STI: engines & MPG
The 2026 WRX STI was EPA-rated in 2 versions (2.4L 4-cyl), with combined economy from 21 to 22 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.4L 4-cyl | Manual 6-spd | Premium | 19 | 26 | 22 MPG |
| WRX | 2.4L 4-cyl | Automatic (AV-S8) | Premium | 18 | 25 | 21 MPG |
2025 Subaru WRX STI: engines & MPG
The 2025 WRX STI was EPA-rated in 2 versions (2.4L 4-cyl), with combined economy from 21 to 22 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.4L 4-cyl | Manual 6-spd | Premium | 19 | 26 | 22 MPG |
| WRX | 2.4L 4-cyl | Automatic (AV-S8) | Premium | 18 | 25 | 21 MPG |
2024 Subaru WRX STI: engines & MPG
The 2024 WRX STI was EPA-rated in 2 versions (2.4L 4-cyl), with combined economy from 21 to 22 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.4L 4-cyl | Manual 6-spd | Premium | 19 | 26 | 22 MPG |
| WRX | 2.4L 4-cyl | Automatic (AV-S8) | Premium | 18 | 25 | 21 MPG |
2023 Subaru WRX STI: engines & MPG
The 2023 WRX STI was EPA-rated in 2 versions (2.4L 4-cyl), with combined economy from 21 to 22 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.4L 4-cyl | Manual 6-spd | Premium | 19 | 26 | 22 MPG |
| WRX | 2.4L 4-cyl | Automatic (AV-S8) | Premium | 19 | 25 | 21 MPG |
2022 Subaru WRX STI: engines & MPG
The 2022 WRX STI was EPA-rated in 2 versions (2.4L 4-cyl), with combined economy from 21 to 22 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.4L 4-cyl | Manual 6-spd | Premium | 19 | 26 | 22 MPG |
| WRX | 2.4L 4-cyl | Automatic (AV-S8) | Premium | 19 | 25 | 21 MPG |
2021 Subaru WRX STI: engines & MPG
The 2021 WRX STI was EPA-rated in 3 versions (2.0L 4-cyl, 2.5L 4-cyl), with combined economy from 18 to 23 MPG. Used 2021 models currently list for a median of $32,977 on VehiSales (41 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.0L 4-cyl | Manual 6-spd | Premium | 20 | 27 | 23 MPG |
| WRX | 2.0L 4-cyl | Automatic (AV-S8) | Premium | 18 | 24 | 21 MPG |
| WRX | 2.5L 4-cyl | Manual 6-spd | Premium | 16 | 22 | 18 MPG |
2020 Subaru WRX STI: engines & MPG
The 2020 WRX STI was EPA-rated in 3 versions (2.0L 4-cyl, 2.5L 4-cyl), with combined economy from 19 to 23 MPG. Used 2020 models currently list for a median of $30,400 on VehiSales (37 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.0L 4-cyl | Manual 6-spd | Premium | 21 | 27 | 23 MPG |
| WRX | 2.0L 4-cyl | Automatic (AV-S8) | Premium | 18 | 24 | 21 MPG |
| WRX | 2.5L 4-cyl | Manual 6-spd | Premium | 16 | 22 | 19 MPG |
2019 Subaru WRX STI: engines & MPG
The 2019 WRX STI was EPA-rated in 3 versions (2.0L 4-cyl, 2.5L 4-cyl), with combined economy from 19 to 23 MPG. Used 2019 models currently list for a median of $25,995 on VehiSales (30 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.0L 4-cyl | Manual 6-spd | Premium | 21 | 27 | 23 MPG |
| WRX | 2.0L 4-cyl | Automatic (AV-S8) | Premium | 18 | 24 | 21 MPG |
| WRX | 2.5L 4-cyl | Manual 6-spd | Premium | 17 | 22 | 19 MPG |
2018 Subaru WRX STI: engines & MPG
The 2018 WRX STI was EPA-rated in 1 version (2.5L 4-cyl), with combined economy of 18 MPG. Used 2018 models currently list for a median of $23,990 on VehiSales (25 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX STI Type RA | 2.5L 4-cyl | Manual 6-spd | Premium | 16 | 22 | 18 MPG |
2017 Subaru WRX STI: engines & MPG
The 2017 WRX STI was EPA-rated in 3 versions (2.0L 4-cyl, 2.5L 4-cyl), with combined economy from 19 to 23 MPG. Used 2017 models currently list for a median of $20,920 on VehiSales (43 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.0L 4-cyl | Manual 6-spd | Premium | 20 | 27 | 23 MPG |
| WRX | 2.0L 4-cyl | Automatic (AV-S8) | Premium | 18 | 24 | 21 MPG |
| WRX | 2.5L 4-cyl | Manual 6-spd | Premium | 17 | 23 | 19 MPG |
2016 Subaru WRX STI: engines & MPG
The 2016 WRX STI was EPA-rated in 3 versions (2.0L 4-cyl, 2.5L 4-cyl), with combined economy from 19 to 23 MPG. Used 2016 models currently list for a median of $21,450 on VehiSales (32 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.0L 4-cyl | Manual 6-spd | Premium | 20 | 27 | 23 MPG |
| WRX | 2.0L 4-cyl | Automatic (AV-S8) | Premium | 18 | 24 | 21 MPG |
| WRX | 2.5L 4-cyl | Manual 6-spd | Premium | 17 | 23 | 19 MPG |
2015 Subaru WRX STI: engines & MPG
The 2015 WRX STI was EPA-rated in 3 versions (2.0L 4-cyl, 2.5L 4-cyl), with combined economy from 19 to 24 MPG. Used 2015 models currently list for a median of $18,995 on VehiSales (26 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| WRX | 2.0L 4-cyl | Manual 6-spd | Premium | 21 | 28 | 24 MPG |
| WRX | 2.0L 4-cyl | Automatic (AV-S8) | Premium | 19 | 25 | 21 MPG |
| WRX | 2.5L 4-cyl | Manual 6-spd | Premium | 17 | 23 | 19 MPG |
Frequently asked questions
What MPG does a Subaru WRX STI get?
Depending on year and engine, EPA combined ratings for the WRX STI range from 18 to 24 MPG. The most efficient rated version is the 2015 model year.
What engines does the 2026 Subaru WRX STI have?
The 2026 WRX STI was EPA-rated with 2.4L 4-cyl engines — see the 2026 table above for each version's exact city/highway figures.
Does the Subaru WRX STI require premium gas?
Yes — every EPA-rated gas WRX STI version specifies premium gasoline.
https://vehisales.com/research/fuel-economy/subaru/wrx-sti.
See also: Subaru WRX STI hub — live listings, prices & reliability · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].