Based on data from 154 vehicles, 14,568 fuel-ups and 3,711,751 miles of driving, the 2009 Pontiac G8 gets a combined Avg MPG of 17.74 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 498 outliers (3.31%) removed.

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

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• My G8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Aug 2022 • 91 Fuel-ups

  Property of Jacksonpage

• 14.3 Avg MPG

• Commodore

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Jan 2025 • 19 Fuel-ups

  Property of wi111y

• 16.5 Avg MPG

• Pontiac G8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added May 2018 • 326 Fuel-ups

  Property of agra27

• 12.7 Avg MPG

• GREY8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Feb 2013 • 448 Fuel-ups

  Property of Plumman

• 17.7 Avg MPG

• Mi M8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Mar 2023 • 82 Fuel-ups

  Property of Logan-_-

• 17.4 Avg MPG

• G8

  2009 Pontiac G8 3.6L V6 GAS Automatic 5 Speed
  Added Aug 2016 • 574 Fuel-ups

  Property of glvandenberg

• 22.7 Avg MPG

• G8 GT

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Sep 2018 • 409 Fuel-ups

  Property of nateshawk

• 18.4 Avg MPG

• My G8

  2009 Pontiac G8 3.6L V6 GAS Automatic 5 Speed
  Added Apr 2022 • 42 Fuel-ups

  Property of slack

• 19.7 Avg MPG

• G8 GT

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Jun 2021 • 699 Fuel-ups

  Property of kamilw

• 20.2 Avg MPG

• Pontiac G8

  2009 Pontiac G8 3.6L V6 GAS Automatic 5 Speed Sedan
  Added Sep 2012 • 221 Fuel-ups

  Property of tinagreen5

• 27.0 Avg MPG

• Pontiac G8

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added May 2018 • 323 Fuel-ups

  Property of golfjunky12

• 13.6 Avg MPG

• G8GT

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Nov 2010 • 464 Fuel-ups

  Property of Quick4Door

• 18.0 Avg MPG

• G8 GXP

  2009 Pontiac G8 GXP 6.2L V8 GAS Manual 6 Speed
  Added Apr 2017 • 209 Fuel-ups

  Property of auslndr

• 22.0 Avg MPG

• My G8

  2009 Pontiac G8 GXP 6.2L V8 GAS Automatic 6 Speed
  Added Sep 2024 • 15 Fuel-ups

  Property of Zyler9009

• 8.6 Avg MPG

• G8 GT

  2009 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Aug 2019 • 126 Fuel-ups

  Property of blackronin

• 17.1 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

• 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

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

  Property of MotorHeadLS85

• 18.6 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

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