Based on data from 90 vehicles, 7,694 fuel-ups and 1,798,507 miles of driving, the 2015 Subaru WRX STI gets a combined Avg MPG of 18.88 with a 0.08 MPG margin of error.

Any Engine Type 2.5L H4 GAS (87) H4 GAS (2) Any Body Style Sedan (27) Any Submodel Launch Edition (18) Limited (29) Base (40) Other (3)

Below you can see a distribution of the fuel-ups with 123 outliers (1.57%) removed.

Following shows the average MPG of each of the 90 vehicles in the system.

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• Sti

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed Sedan
  Added Apr 2018 • 64 Fuel-ups

  Property of Albertpender

• 13.7 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Standard 6 Speed
  Added May 2018 • 3 Fuel-ups

  Property of jkrlox

• 21.7 Avg MPG

• Zax' STI

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed Sedan
  Added May 2018 • 4 Fuel-ups

  Property of zaxrex

• 19.8 Avg MPG

• JDMASFK

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed
  Added Dec 2017 • 41 Fuel-ups

  Property of Snailz787

• 13.2 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Standard 6 Speed
  Added Mar 2016 • 118 Fuel-ups

  Property of hallzy

• 20.3 Avg MPG

• Subaru STi

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Aug 2016 • 156 Fuel-ups

  Property of jtw811

• 18.3 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed
  Added Feb 2018 • 9 Fuel-ups

  Property of codybint

• 21.5 Avg MPG

• Subaru sti

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Jan 2018 • 73 Fuel-ups

  Property of jdis213

• 17.2 Avg MPG

• STi

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Mar 2017 • 92 Fuel-ups

  Property of Fender

• 18.1 Avg MPG

• My WRX STI

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Sedan (4 Door)
  Added Aug 2015 • 65 Fuel-ups

  Property of lowlydubb3r

• 20.0 Avg MPG

• MySTI

  2015 Subaru WRX STI Launch Edition 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Aug 2014 • 63 Fuel-ups

  Property of TheCrazyLudwig

• 22.6 Avg MPG

• The STI

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Apr 2017 • 34 Fuel-ups

  Property of sramx7

• 19.1 Avg MPG

• Suzi

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed Sedan
  Added Apr 2018 • 56 Fuel-ups

  Property of iDashX

• 18.5 Avg MPG

• 2015 STI

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Oct 2015 • 90 Fuel-ups

  Property of steelhiro

• 20.4 Avg MPG

• WRX STI Launch Edition SOLD

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Manual 6 Speed
  Added Aug 2014 • 134 Fuel-ups

  Property of Whacker

• 18.5 Avg MPG

• Christopher Hesse

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Mar 2017 • 230 Fuel-ups

  Property of vukoo

• 23.7 Avg MPG

• Desdemona

  2015 Subaru WRX STI Limited 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Jun 2015 • 35 Fuel-ups

  Property of phinz

• 19.1 Avg MPG

• My 2015 STI

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed Sedan
  Added Mar 2015 • 69 Fuel-ups

  Property of console_cowboy

• 17.9 Avg MPG

• 15Sti

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed Sedan
  Added Jun 2014 • 153 Fuel-ups

  Property of veto

• 17.9 Avg MPG

• WRX STI

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed Sedan
  Added May 2018 • 80 Fuel-ups

  Property of moodsmtu

• 22.5 Avg MPG

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