Based on data from 18 vehicles, 436 fuel-ups and 97,293 miles of driving, the 2020 Subaru WRX STI gets a combined Avg MPG of 19.13 with a 0.31 MPG margin of error.

Any Engine Type 2.5L H4 GAS (16) H4 GAS (1) Any Body Style Sedan (3) Any Submodel STI (1) Limited (6) Base (11)

Below you can see a distribution of the fuel-ups with 0 outliers (0.00%) removed.

Following shows the average MPG of each of the 18 vehicles in the system.

• My WRX STI

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

  Property of tcole193

• 19.3 Avg MPG

• 2020 STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Mar 2020 • 39 Fuel-ups

  Property of amdpowered

• 22.4 Avg MPG

• WRX STI

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Nov 2020 • 7 Fuel-ups

  Property of mchardt

• 17.5 Avg MPG

• Thiago

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added Mar 2020 • 39 Fuel-ups

  Property of BurntGauge

• 19.9 Avg MPG

• WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Jan 2020 • 32 Fuel-ups

  Property of Batman122ci

• 17.9 Avg MPG

• My WRX STI 2020

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Mar 2020 • 45 Fuel-ups

  Property of LOD-squa

• 21.0 Avg MPG

• My WRX STI

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added May 2020 • 18 Fuel-ups

  Property of Scotsch

• 17.5 Avg MPG

• My WRX STI

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

  Property of warrinerjake99

• 19.4 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Nov 2020 • 8 Fuel-ups

  Property of Mekrunner

• 20.7 Avg MPG

• Subbie Jr

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed Sedan
  Added May 2020 • 35 Fuel-ups

  Property of arobb3

• 20.9 Avg MPG

• Sully II

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Jun 2020 • 16 Fuel-ups

  Property of russb4

• 20.5 Avg MPG

• Dubaroo

  2020 Subaru WRX STI H4 GAS Manual 6 Speed
  Added Nov 2019 • 33 Fuel-ups

  Property of alexzaxp

• 16.2 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Jul 2020 • 21 Fuel-ups

  Property of basedern

• 16.3 Avg MPG

• My WRX STI

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Feb 2020 • 11 Fuel-ups

  Property of savafan1

• 19.4 Avg MPG

• My WRX STI

  2020 Subaru WRX STI 2.5L H4 GAS Manual 6 Speed
  Added Mar 2020 • 21 Fuel-ups

  Property of chaosalys

• 18.8 Avg MPG

• Keiko

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Feb 2020 • 20 Fuel-ups

  Property of cmilktoast

• 16.8 Avg MPG

• My WRX STI

  2020 Subaru WRX STI Limited 2.5L H4 GAS Manual 6 Speed
  Added Jun 2020 • 20 Fuel-ups

  Property of JedFromAZ

• 17.4 Avg MPG

• PSD STI

  2020 Subaru WRX STI STI
  Added Nov 2020 • 3 Fuel-ups

  Property of jchop

• 16.4 Avg MPG