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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• My WRX STI

  2015 Subaru WRX STI Limited 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Sep 2014 • 67 Fuel-ups

  Property of JTPitsch

• 20.3 Avg MPG

• My WRX STI

  2015 Subaru WRX STI 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added May 2015 • 56 Fuel-ups

  Property of travisrego

• 18.4 Avg MPG

• Blu

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed Sedan
  Added Jul 2014 • 86 Fuel-ups

  Property of 4doorj

• 20.1 Avg MPG

• My WRX STI

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Standard 6 Speed
  Added Jul 2016 • 5 Fuel-ups

  Property of odenfire1819

• 22.0 Avg MPG

• STIGT86

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed Sedan
  Added Oct 2014 • 120 Fuel-ups

  Property of bxrgt86

• 20.3 Avg MPG

• Blue Ray

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Standard 6 Speed Sedan
  Added May 2016 • 14 Fuel-ups

  Property of Jake96

• 20.4 Avg MPG

• My WRX STI

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

  Property of RoWena

• 20.4 Avg MPG

• BigWing

  2015 Subaru WRX STI Launch Edition 2.5L H4 GAS Standard 6 Speed Sedan
  Added Sep 2014 • 25 Fuel-ups

  Property of pmccut

• 22.2 Avg MPG

• JSTi

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed Sedan
  Added Jul 2015 • 37 Fuel-ups

  Property of artulo

• 19.3 Avg MPG

• Slowhite

  2015 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed
  Added Aug 2015 • 26 Fuel-ups

  Property of sti479

• 22.0 Avg MPG

• WRX STi

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Sedan (4 Door)
  Added Jul 2015 • 11 Fuel-ups

  Property of Ryanwrxsti

• 18.4 Avg MPG

• Red STi

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Sedan (4 Door)
  Added Nov 2014 • 44 Fuel-ups

  Property of milburnr

• 19.7 Avg MPG

• Not His

  2015 Subaru WRX STI 2.5L H4 GAS Standard 6 Sedan (4 Door)
  Added Jul 2015 • 10 Fuel-ups

  Property of herSTi

• 20.3 Avg MPG

• STI

  2015 Subaru WRX STI Limited 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Jul 2014 • 42 Fuel-ups

  Property of stinster

• 21.4 Avg MPG

• 2015 WRX STi

  2015 Subaru WRX STI 2.5L GAS H4 2458cc Standard 6
  Added Jun 2014 • 58 Fuel-ups

  Property of bjboucher

• 20.4 Avg MPG

• My WRX STI

  2015 Subaru WRX STI 2.5L GAS H4 Standard 6
  Added Mar 2015 • 10 Fuel-ups

  Property of donutranger

• 20.6 Avg MPG

• Silvia

  2015 Subaru WRX STI 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Apr 2015 • 8 Fuel-ups

  Property of nsti2nv

• 25.1 Avg MPG

• WRX STI MY15 Grey

  2015 Subaru WRX STI 2.5L GAS H4 Standard 6
  Added Apr 2015 • 10 Fuel-ups

  Property of dedecz

• 14.9 Avg MPG

• 15' Subaru STI

  2015 Subaru WRX STI 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Mar 2015 • 10 Fuel-ups

  Property of T-FAST

• 20.2 Avg MPG

• STI

  2015 Subaru WRX STI 2.5L GAS H4 Standard 6
  Added Jan 2015 • 13 Fuel-ups

  Property of quasimoto

• 20.6 Avg MPG

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