Based on data from 31 vehicles, 2,451 fuel-ups and 553,752 miles of driving, the 2020 Subaru WRX STI gets a combined Avg MPG of 19.24 with a 0.17 MPG margin of error.

Any Engine Type 2.5L H4 GAS (29) H4 GAS (1) Any Body Style Sedan (7) Any Submodel Sport-tech (1) STI (3) Limited (10) Base (17)

Below you can see a distribution of the fuel-ups with 8 outliers (0.33%) removed.

Following shows the average MPG of each of the 31 vehicles in the system.

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• WRX STI

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Nov 2020 • 111 Fuel-ups

  Property of mchardt

• 18.3 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Feb 2024 • 26 Fuel-ups

  Property of cmb146

• 19.9 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Feb 2021 • 123 Fuel-ups

  Property of adubs81

• 20.2 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Apr 2020 • 315 Fuel-ups

  Property of tcole193

• 17.5 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Jul 2020 • 150 Fuel-ups

  Property of basedern

• 13.3 Avg MPG

• My WRX STI

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Feb 2020 • 89 Fuel-ups

  Property of savafan1

• 20.3 Avg MPG

• My WRX STI

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Apr 2024 • 5 Fuel-ups

  Property of CarissaT

• 21.4 Avg MPG

• 2020 Subaru WRX STI

  2020 Subaru WRX STI STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Apr 2021 • 84 Fuel-ups

  Property of Hondajunkie

• 18.4 Avg MPG

• Keiko

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Feb 2020 • 70 Fuel-ups

  Property of cmilktoast

• 17.1 Avg MPG

• My WRX STI

  2020 Subaru WRX STI Sport-tech 2.5L H4 GAS Manual 6 Speed
  Added Feb 2021 • 100 Fuel-ups

  Property of Stealthman1000

• 17.9 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Nov 2020 • 121 Fuel-ups

  Property of warrinerjake99

• 22.3 Avg MPG

• The Subie

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed Sedan
  Added Sep 2021 • 147 Fuel-ups

  Property of Bryguysays

• 21.0 Avg MPG

• My WRX STI

  2020 Subaru WRX STI STI 2.5L H4 GAS Manual 6 Speed
  Added Jun 2022 • 86 Fuel-ups

  Property of sdracer

• 20.6 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Apr 2022 • 49 Fuel-ups

  Property of jlong1989

• 13.7 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Mar 2021 • 60 Fuel-ups

  Property of jpiekar3

• 22.3 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Mar 2020 • 89 Fuel-ups

  Property of chaosalys

• 18.6 Avg MPG

• Blue WRX STI

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Jan 2021 • 199 Fuel-ups

  Property of HWRX

• 21.3 Avg MPG

• Dubaroo

  2020 Subaru WRX STI H4 GAS Manual 6 Speed
  Added Nov 2019 • 97 Fuel-ups

  Property of alexzaxp

• 16.8 Avg MPG

• Sully II

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Jun 2020 • 92 Fuel-ups

  Property of russb4

• 21.3 Avg MPG

• My WRX STI

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added May 2020 • 60 Fuel-ups

  Property of Scotsch

• 17.9 Avg MPG

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