Based on data from 91 vehicles, 8,160 fuel-ups and 1,903,728 miles of driving, the 2015 Subaru WRX STI gets a combined Avg MPG of 18.80 with a 0.07 MPG margin of error.

Any Engine Type 2.5L H4 GAS (88) H4 GAS (2) Any Body Style Sedan (28) Any Submodel Launch Edition (18) Limited (29) Base (41) Other (3)

Below you can see a distribution of the fuel-ups with 123 outliers (1.48%) removed.

Following shows the average MPG of each of the 91 vehicles in the system.

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• Subaru WRX STi

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed Sedan
  Added Jan 2025 • 553 Fuel-ups

  Property of adampetrasek

• 17.5 Avg MPG

• MY16 WRX STi

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Sep 2016 • 481 Fuel-ups

  Property of tim33h

• 15.3 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Manual 6 Speed
  Added Jan 2019 • 231 Fuel-ups

  Property of itsm3ming

• 17.9 Avg MPG

• Mae

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Feb 2025 • 103 Fuel-ups

  Property of plav74

• 17.2 Avg MPG

• STi

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Oct 2018 • 217 Fuel-ups

  Property of brentlz

• 19.3 Avg MPG

• Rufus' Scoob

  2015 Subaru WRX STI Launch Edition 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Jul 2014 • 201 Fuel-ups

  Property of VoodooRufus

• 19.1 Avg MPG

• K7X STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS
  Added Sep 2024 • 19 Fuel-ups

  Property of RyanWL

• 19.8 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed Sedan
  Added Mar 2015 • 255 Fuel-ups

  Property of m12mirage

• 19.9 Avg MPG

• STi

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Jan 2024 • 43 Fuel-ups

  Property of jakerwrx

• 22.4 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Jun 2022 • 11 Fuel-ups

  Property of kevineaux

• 19.4 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed
  Added Jul 2017 • 53 Fuel-ups

  Property of Kevandhistoyz

• 20.7 Avg MPG

• Blue Beast

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed
  Added Sep 2015 • 438 Fuel-ups

  Property of Niro

• 20.2 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Manual 6 Speed
  Added Aug 2019 • 41 Fuel-ups

  Property of nOObman

• 18.6 Avg MPG

• STi

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed Sedan
  Added Sep 2019 • 281 Fuel-ups

  Property of noodles44

• 20.2 Avg MPG

• My WRX STI

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Apr 2023 • 3 Fuel-ups

  Property of xing0318

• 9.3 Avg MPG

• Subaru Impreza STi

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Manual 6 Speed Sedan
  Added Mar 2015 • 188 Fuel-ups

  Property of astracd

• 18.1 Avg MPG

• '15 STi

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Standard 6 Speed Sedan
  Added Oct 2015 • 51 Fuel-ups

  Property of RacerX323

• 18.2 Avg MPG

• My WRX STI

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Oct 2020 • 67 Fuel-ups

  Property of westchalk

• 20.5 Avg MPG

• WRX STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Mar 2019 • 84 Fuel-ups

  Property of Soulflyzz

• 20.0 Avg MPG

• 15 WRX STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Jun 2019 • 52 Fuel-ups

  Property of waltsacura

• 17.9 Avg MPG

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