Based on data from 51 vehicles, 4,463 fuel-ups and 1,066,908 miles of driving, the 2018 Subaru WRX STI gets a combined Avg MPG of 19.64 with a 0.10 MPG margin of error.

Any Engine Type 2.5L H4 GAS (51) Any Body Style Sedan (20) Any Submodel Sport (1) Type RA (4) STI (8) Sport-tech (8) Base (15) Limited (15)

Below you can see a distribution of the fuel-ups with 62 outliers (1.37%) removed.

Following shows the average MPG of each of the 51 vehicles in the system.

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• Doctor STI

  2018 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed Sedan
  Added Apr 2022 • 77 Fuel-ups

  Property of BestBaconAround

• 20.5 Avg MPG

• My WRX STI

  2018 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Dec 2018 • 46 Fuel-ups

  Property of scamberos9

• 17.6 Avg MPG

• Gina

  2018 Subaru WRX STI STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Jan 2022 • 3 Fuel-ups

  Property of Vdo123

• 45.0 Avg MPG

• SAIS0KU

  2018 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed
  Added Apr 2018 • 220 Fuel-ups

  Property of labrame

• 21.9 Avg MPG

• My WRX STI

  2018 Subaru WRX STI Sport-tech 2.5L H4 GAS Manual 6 Speed
  Added Jul 2021 • 32 Fuel-ups

  Property of BrokenFlywheel

• 21.1 Avg MPG

• Subaru WRX STI

  2018 Subaru WRX STI Sport-tech 2.5L H4 GAS Manual 6 Speed
  Added Mar 2018 • 87 Fuel-ups

  Property of nwilloughby

• 16.5 Avg MPG

• Sti

  2018 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed Sedan
  Added Nov 2017 • 79 Fuel-ups

  Property of camelflage

• 19.8 Avg MPG

• STI

  2018 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed Sedan
  Added May 2018 • 32 Fuel-ups

  Property of Belikea

• 21.2 Avg MPG

• My WRX STI

  2018 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Oct 2020 • 23 Fuel-ups

  Property of HWRX

• 20.8 Avg MPG

• My WRX STI

  2018 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Feb 2018 • 135 Fuel-ups

  Property of LOD-squa

• 20.9 Avg MPG

• Sophia

  2018 Subaru WRX STI Sport-tech 2.5L H4 GAS Standard 6 Speed
  Added Mar 2018 • 259 Fuel-ups

  Property of rayryan223

• 19.4 Avg MPG

• My WRX STI

  2018 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Apr 2018 • 45 Fuel-ups

  Property of initialjc

• 18.9 Avg MPG

• 50th STi

  2018 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed Sedan
  Added Jun 2018 • 67 Fuel-ups

  Property of ntron1

• 21.8 Avg MPG

• 2018 STi

  2018 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed Sedan
  Added Oct 2017 • 97 Fuel-ups

  Property of Crackerjack06

• 19.7 Avg MPG

• My WRX STI

  2018 Subaru WRX STI STI 2.5L H4 GAS Manual 6 Speed
  Added Jul 2019 • 4 Fuel-ups

  Property of EricSum

• 4.4 Avg MPG

• My Red STI

  2018 Subaru WRX STI STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Jun 2019 • 12 Fuel-ups

  Property of toha70

• 0.2 Avg MPG

• STI

  2018 Subaru WRX STI STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Jan 2019 • 28 Fuel-ups

  Property of paulrg

• 19.5 Avg MPG

• My WRX STI

  2018 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Feb 2018 • 37 Fuel-ups

  Property of redsox2002

• 19.1 Avg MPG

• My WRX STI

  2018 Subaru WRX STI Limited 2.5L H4 GAS Standard 6 Speed
  Added Mar 2018 • 46 Fuel-ups

  Property of sublimize23

• 23.4 Avg MPG

• My WRX STI

  2018 Subaru WRX STI Type RA 2.5L H4 GAS Standard 6 Speed
  Added Aug 2018 • 6 Fuel-ups

  Property of Richie669

• 20.4 Avg MPG

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