Based on data from 59 vehicles, 5,038 fuel-ups and 1,386,155 miles of driving, the 2008 Pontiac Grand Prix gets a combined Avg MPG of 21.11 with a 0.14 MPG margin of error.

Any Engine Type 3.8L V6 GAS (36) 5.3L V8 GAS (11) V6 GAS (2) V8 GAS (6) Any Body Style Sedan (21) Any Submodel GXP (11) Base (36) Other (12)

Below you can see a distribution of the fuel-ups with 299 outliers (5.60%) removed.

Following shows the average MPG of each of the 59 vehicles in the system.

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• My Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Dec 2020 • 28 Fuel-ups

  Property of dreiss

• 23.4 Avg MPG

• Dad's Grand Prix Silver

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2021 • 3 Fuel-ups

  Property of hew66jr

• 11.8 Avg MPG

• Garrett's 2008 Pontiac

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Dec 2017 • 20 Fuel-ups

  Property of gman350

• 23.2 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Apr 2017 • 137 Fuel-ups

  Property of linzrosslh

• 25.0 Avg MPG

• Pontiac 2008

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Feb 2018 • 107 Fuel-ups

  Property of Amy62

• 22.2 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed
  Added Feb 2019 • 15 Fuel-ups

  Property of lauraanne

• 19.0 Avg MPG

• Pontiac Grand Prix GXP

  2008 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed Sedan
  Added Sep 2018 • 93 Fuel-ups

  Property of jpolanowski

• 17.4 Avg MPG

• Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Dec 2017 • 7 Fuel-ups

  Property of gunner46168

• 16.6 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2017 • 3 Fuel-ups

  Property of twerpster

• 20.6 Avg MPG

• Pontiac

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jul 2016 • 36 Fuel-ups

  Property of curtis-bob

• 24.5 Avg MPG

• Pontiac Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added May 2017 • 133 Fuel-ups

  Property of bigbenmabry

• 21.7 Avg MPG

• Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 538 Fuel-ups

  Property of glfriesen

• 25.8 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 34 Fuel-ups

  Property of TracMyMo

• 18.6 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Feb 2017 • 32 Fuel-ups

  Property of cryan27

• 23.8 Avg MPG

• Éclair

  2008 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed Sedan
  Added Jul 2014 • 135 Fuel-ups

  Property of b4yp

• 16.0 Avg MPG

• Pontiac Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Feb 2017 • 7 Fuel-ups

  Property of chey

• 35.8 Avg MPG

• Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jan 2025 • 29 Fuel-ups

  Property of packman80

• 23.2 Avg MPG

• 2 Wycked

  2008 Pontiac Grand Prix GAS V8
  Added Mar 2012 • 184 Fuel-ups

  Property of lVloses

• 13.9 Avg MPG

• Gp

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 338 Fuel-ups

  Property of jpete080

• 21.7 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Aug 2016 • 21 Fuel-ups

  Property of Kalin2016

• 24.1 Avg MPG

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