Based on data from 88 vehicles, 7,473 fuel-ups and 1,745,490 miles of driving, the 2015 Subaru WRX STI gets a combined Avg MPG of 18.86 with a 0.08 MPG margin of error.

Any Engine Type 2.5L H4 GAS (85) H4 GAS (2) Any Body Style Sedan (26) Any Submodel Launch Edition (18) Limited (28) Base (39) Other (3)

Below you can see a distribution of the fuel-ups with 120 outliers (1.58%) removed.

Following shows the average MPG of each of the 88 vehicles in the system.

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• STi

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed Sedan
  Added Sep 2019 • 278 Fuel-ups

  Property of noodles44

• 20.2 Avg MPG

• MY16 WRX STi

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Sep 2016 • 431 Fuel-ups

  Property of tim33h

• 15.5 Avg MPG

• Blue Beast

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed
  Added Sep 2015 • 379 Fuel-ups

  Property of Niro

• 20.0 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed Sedan
  Added Mar 2015 • 225 Fuel-ups

  Property of m12mirage

• 19.9 Avg MPG

• Rufus' Scoob

  2015 Subaru WRX STI Launch Edition 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Jul 2014 • 190 Fuel-ups

  Property of VoodooRufus

• 19.1 Avg MPG

• STi

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Oct 2018 • 193 Fuel-ups

  Property of brentlz

• 19.4 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Manual 6 Speed
  Added Aug 2019 • 33 Fuel-ups

  Property of nOObman

• 18.3 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed
  Added Jul 2017 • 50 Fuel-ups

  Property of Kevandhistoyz

• 20.8 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Manual 6 Speed
  Added Jan 2019 • 203 Fuel-ups

  Property of itsm3ming

• 18.0 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

• My WRX STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Jun 2022 • 7 Fuel-ups

  Property of kevineaux

• 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

• Scoob

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Oct 2018 • 266 Fuel-ups

  Property of RobertElder117

• 17.4 Avg MPG

• Scoobie

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Apr 2015 • 236 Fuel-ups

  Property of monochrome101

• 20.6 Avg MPG

• Gwen's STI

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Jul 2019 • 156 Fuel-ups

  Property of Sakai530

• 19.0 Avg MPG

• STI

  2015 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Jun 2015 • 207 Fuel-ups

  Property of DK427

• 17.3 Avg MPG

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