Based on data from 36 vehicles, 3,515 fuel-ups and 1,033,243 miles of driving, the 2008 Pontiac G8 gets a combined Avg MPG of 19.14 with a 0.15 MPG margin of error.

Any Engine Type 3.6L V6 GAS (5) 6.0L V8 GAS (21) V8 GAS (6) Any Body Style Sedan (11) Any Submodel Base (5) GT (22) Other (9)

Below you can see a distribution of the fuel-ups with 20 outliers (0.57%) removed.

Following shows the average MPG of each of the 36 vehicles in the system.

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• G8

  2008 Pontiac G8 3.6L V6 GAS Automatic 5 Speed
  Added Aug 2016 • 234 Fuel-ups

  Property of Ryyaaannnn

• 17.7 Avg MPG

• Geena

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added May 2020 • 136 Fuel-ups

  Property of rsaigone

• 15.3 Avg MPG

• G8 GT

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Jan 2012 • 298 Fuel-ups

  Property of adryan16

• 18.1 Avg MPG

• My G8

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Jul 2023 • 15 Fuel-ups

  Property of TyRun

• 9.6 Avg MPG

• My G8

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Sep 2020 • 139 Fuel-ups

  Property of jrubio

• 16.9 Avg MPG

• 2008 G8

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Jan 2021 • 410 Fuel-ups

  Property of tfarinella08

• 18.5 Avg MPG

• Jezebel

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added May 2011 • 471 Fuel-ups

  Property of jhardy06

• 18.3 Avg MPG

• Black G8

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Sep 2017 • 38 Fuel-ups

  Property of keith455

• 14.6 Avg MPG

• 2008 G8

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Apr 2018 • 51 Fuel-ups

  Property of BradyMan00

• 19.8 Avg MPG

• Red G8 GT

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Sep 2020 • 35 Fuel-ups

  Property of zsneed

• 19.8 Avg MPG

• G8 GT

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Nov 2018 • 155 Fuel-ups

  Property of ogonzalez614

• 10.9 Avg MPG

• Dave's Car

  2008 Pontiac G8 3.6L V6 GAS Automatic 5 Speed Sedan
  Added Mar 2018 • 149 Fuel-ups

  Property of dunkdave

• 19.8 Avg MPG

• G8orade

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Sep 2014 • 143 Fuel-ups

  Property of theflb

• 17.4 Avg MPG

• G8

  2008 Pontiac G8 3.6L V6 GAS Automatic 5 Sedan (4 Door)
  Added Aug 2012 • 330 Fuel-ups

  Property of bnewton831

• 23.0 Avg MPG

• Black Beauty

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Sep 2016 • 104 Fuel-ups

  Property of iNative

• 20.1 Avg MPG

• Pontiac G8

  2008 Pontiac G8 3.6L V6 GAS Automatic 5 Speed Sedan
  Added Dec 2017 • 293 Fuel-ups

  Property of grdamour

• 24.0 Avg MPG

• Stella

  2008 Pontiac G8 GAS V8
  Added May 2013 • 6 Fuel-ups

  Property of RedGT

• 16.2 Avg MPG

• My G8

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed
  Added Aug 2018 • 8 Fuel-ups

  Property of Weaselball

• 18.2 Avg MPG

• G8

  2008 Pontiac G8 3.6L V6 GAS Automatic 5 Speed Sedan
  Added Oct 2017 • 21 Fuel-ups

  Property of cpmjr123

• 15.2 Avg MPG

• Pontiac G8 GT

  2008 Pontiac G8 GT 6.0L V8 GAS Automatic 6 Speed Sedan
  Added Jan 2012 • 175 Fuel-ups

  Property of DrewDogG8

• 17.5 Avg MPG

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