Based on data from 54 vehicles, 3,942 fuel-ups and 1,097,136 miles of driving, the 2008 Pontiac Grand Prix gets a combined Avg MPG of 21.56 with a 0.17 MPG margin of error.

Any Engine Type 3.8L V6 GAS (35) 5.3L V8 GAS (7) V6 GAS (2) V8 GAS (6) Any Body Style Sedan (16) Any Submodel GXP (7) Base (35) Other (12)

Below you can see a distribution of the fuel-ups with 85 outliers (2.11%) removed.

Following shows the average MPG of each of the 54 vehicles in the system.

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• Winter Pontiac Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2023 • 18 Fuel-ups

  Property of Jasonm26

• 23.3 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed
  Added Dec 2017 • 156 Fuel-ups

  Property of mjm16

• 16.9 Avg MPG

• v8 grand prix

  2008 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed Sedan
  Added Aug 2023 • 13 Fuel-ups

  Property of Elijah11

• 17.7 Avg MPG

• OL WENCH

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jul 2018 • 48 Fuel-ups

  Property of Bdkarma

• 19.9 Avg MPG

• Pontiac

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Feb 2023 • 167 Fuel-ups

  Property of Guilford

• 24.4 Avg MPG

• Pontiac

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added May 2023 • 18 Fuel-ups

  Property of Misenberg

• 18.6 Avg MPG

• Pontiac

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2022 • 9 Fuel-ups

  Property of GasSavers_odiekokee

• 23.3 Avg MPG

• Pontiac Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jan 2023 • 142 Fuel-ups

  Property of dmueller22

• 21.4 Avg MPG

• Pontiac Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added May 2018 • 134 Fuel-ups

  Property of dmueller22

• 21.6 Avg MPG

• Dah Ponti

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jan 2016 • 184 Fuel-ups

  Property of Waynewec

• 25.0 Avg MPG

• My Grand Prix

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

  Property of etaylor79

• 23.4 Avg MPG

• Grand prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Jan 2018 • 287 Fuel-ups

  Property of KristenLeeAdams

• 23.9 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Jun 2020 • 29 Fuel-ups

  Property of dbraun4

• 25.0 Avg MPG

• My Grand Prix 2008

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added May 2018 • 56 Fuel-ups

  Property of jlm226

• 25.6 Avg MPG

• Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 215 Fuel-ups

  Property of bjbrowers

• 22.5 Avg MPG

• 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

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