Based on data from 154 vehicles, 14,533 fuel-ups and 3,703,547 miles of driving, the 2009 Pontiac G8 gets a combined Avg MPG of 17.75 with a 0.07 MPG margin of error.

Any Engine Type 3.6L V6 GAS (11) 6.0L V8 GAS (79) 6.2L V8 GAS (18) V6 GAS (2) V8 GAS (39) Any Body Style Sedan (52) Any Submodel Base (11) GXP (18) GT (80) Other (45)

Below you can see a distribution of the fuel-ups with 495 outliers (3.29%) removed.

Following shows the average MPG of each of the 154 vehicles in the system.

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• Mi M8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Mar 2023 • 80 Fuel-ups

  Property of Logan-_-

• 17.4 Avg MPG

• Pontiac G8

  2009 Pontiac G8 3.6L V6 GAS Automatic 5 Speed Sedan
  Added Sep 2012 • 220 Fuel-ups

  Property of tinagreen5

• 27.0 Avg MPG

• G8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Aug 2016 • 420 Fuel-ups

  Property of Sbaneck

• 19.9 Avg MPG

• Commodore

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Jan 2025 • 13 Fuel-ups

  Property of wi111y

• 16.1 Avg MPG

• G8 GT

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Aug 2019 • 125 Fuel-ups

  Property of blackronin

• 17.1 Avg MPG

• G8 GT

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Sep 2018 • 405 Fuel-ups

  Property of nateshawk

• 18.4 Avg MPG

• G8 GT

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added May 2009 • 323 Fuel-ups

  Property of JoshHefnerX

• 17.6 Avg MPG

• Pontiac G8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added May 2018 • 321 Fuel-ups

  Property of golfjunky12

• 13.6 Avg MPG

• Pontiac G8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added May 2018 • 320 Fuel-ups

  Property of agra27

• 12.7 Avg MPG

• G8

  2009 Pontiac G8 3.6L V6 GAS Automatic 5 Speed
  Added Aug 2016 • 568 Fuel-ups

  Property of glvandenberg

• 22.7 Avg MPG

• GREY8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Feb 2013 • 445 Fuel-ups

  Property of Plumman

• 17.7 Avg MPG

• G8 GT

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Jun 2021 • 697 Fuel-ups

  Property of kamilw

• 20.2 Avg MPG

• Pontiac

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Mar 2017 • 177 Fuel-ups

  Property of MotorHeadLS85

• 18.6 Avg MPG

• G8 GXP

  2009 Pontiac G8 GXP 6.2L V8 GAS Manual 6 Speed
  Added Apr 2017 • 208 Fuel-ups

  Property of auslndr

• 22.0 Avg MPG

• Pontiac G8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Aug 2016 • 407 Fuel-ups

  Property of nick58b

• 16.6 Avg MPG

• Clubsport R8 E Series

  2009 Pontiac G8 GXP ٦٫٢L V8 GAS Automatic 6 Speed
  Added Sep 2018 • 44 Fuel-ups

  Property of san777

• 13.1 Avg MPG

• INSTG8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Sep 2018 • 172 Fuel-ups

  Property of OMGnanerpus

• 14.1 Avg MPG

• My G8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Aug 2022 • 88 Fuel-ups

  Property of Jacksonpage

• 14.3 Avg MPG

• My G8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Mar 2019 • 233 Fuel-ups

  Property of sulemankhan_

• 14.1 Avg MPG

• My G8

  2009 Pontiac G8 GXP 6.2L V8 GAS Automatic 6 Speed
  Added Sep 2024 • 13 Fuel-ups

  Property of Zyler9009

• 8.8 Avg MPG

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