Based on data from 46 vehicles, 4,234 fuel-ups and 1,013,890 miles of driving, the 2013 Subaru WRX STI gets a combined Avg MPG of 19.38 with a 0.11 MPG margin of error.

Any Engine Type 2.5L H4 GAS (31) GAS (2) H4 GAS (11) Any Body Style Sedan (6) Wagon (1) Hatchback (2) Any Submodel Sport-tech (10) Base (21) Other (15)

Below you can see a distribution of the fuel-ups with 162 outliers (3.69%) removed.

Following shows the average MPG of each of the 46 vehicles in the system.

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• STi

  2013 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Aug 2016 • 11 Fuel-ups

  Property of rbcogburn

• 19.9 Avg MPG

• Jolene

  2013 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed Wagon
  Added Nov 2012 • 180 Fuel-ups

  Property of 2468101214

• 18.9 Avg MPG

• STI

  2013 Subaru WRX STI Sport-tech 2.5L H4 GAS Standard 6 Speed
  Added Aug 2016 • 70 Fuel-ups

  Property of BHazel

• 21.5 Avg MPG

• CK's STi

  2013 Subaru WRX STI Sport-tech 2.5L H4 GAS Standard 6 Speed
  Added Sep 2016 • 93 Fuel-ups

  Property of awtexan

• 18.7 Avg MPG

• STI Limited Sedan

  2013 Subaru WRX STI Sport-tech 2.5L H4 GAS Standard 6 Speed Sedan
  Added Apr 2013 • 58 Fuel-ups

  Property of Rocketsauce

• 21.4 Avg MPG

• My WRX STI

  2013 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Feb 2016 • 3 Fuel-ups

  Property of edwinasplundh1

• 14.6 Avg MPG

• WRX STi Limited

  2013 Subaru WRX STI GAS H4 6SPD
  Added Oct 2013 • 157 Fuel-ups

  Property of Yanbags

• 16.1 Avg MPG

• Subaru WRX STi

  2013 Subaru WRX STI GAS H4
  Added Feb 2013 • 73 Fuel-ups

  Property of jaders

• 20.0 Avg MPG

• My WRX STI

  2013 Subaru WRX STI 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Jan 2015 • 43 Fuel-ups

  Property of kijho

• 21.8 Avg MPG

• Aero Sti

  2013 Subaru WRX STI 2.5L H4 GAS Standard 6 Sedan (4 Door)
  Added Sep 2014 • 70 Fuel-ups

  Property of jedi_sol

• 28.4 Avg MPG

• Subie STI

  2013 Subaru WRX STI GAS H4 Wagon
  Added Oct 2013 • 95 Fuel-ups

  Property of SubieSTI

• 21.7 Avg MPG

• STI

  2013 Subaru WRX STI Sport-tech 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Apr 2015 • 3 Fuel-ups

  Property of jpstp

• 14.4 Avg MPG

• Sumire

  2013 Subaru WRX STI GAS H4
  Added Nov 2013 • 20 Fuel-ups

  Property of Toombs

• 17.6 Avg MPG

• Blue Bandit

  2013 Subaru WRX STI Sport-tech 2.5L GAS H4 Standard 6 Sedan (4 Door)
  Added Aug 2014 • 3 Fuel-ups

  Property of StiElectric

• 21.2 Avg MPG

• Jason's STI (Stage II)

  2013 Subaru WRX STI GAS H4
  Added Jan 2014 • 63 Fuel-ups

  Property of jkups

• 16.1 Avg MPG

• STI

  2013 Subaru WRX STI GAS H4
  Added Dec 2013 • 157 Fuel-ups

  Property of xaved

• 19.1 Avg MPG

• Scott STI

  2013 Subaru WRX STI GAS
  Added Dec 2012 • 80 Fuel-ups

  Property of AbusoSTI

• 20.4 Avg MPG

• STI

  2013 Subaru WRX STI GAS
  Added Apr 2014 • 9 Fuel-ups

  Property of khaydin

• 23.0 Avg MPG

• My-STI

  2013 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Aug 2018 • 82 Fuel-ups

  Property of alroe118

• 17.6 Avg MPG

• Steezy

  2013 Subaru WRX STI 2.5L H4 GAS Standard 6 Speed
  Added Sep 2016 • 48 Fuel-ups

  Property of jabbathewhat

• 18.1 Avg MPG

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