Based on data from 46 vehicles, 3,393 fuel-ups and 952,242 miles of driving, the 2008 Pontiac Grand Prix gets a combined Avg MPG of 21.65 with a 0.18 MPG margin of error.

Any Engine Type 3.8L V6 GAS (28) 5.3L V8 GAS (6) V6 GAS (2) V8 GAS (6) Any Body Style Sedan (9) Any Submodel GXP (6) Base (28) Other (12)

Below you can see a distribution of the fuel-ups with 82 outliers (2.36%) removed.

Following shows the average MPG of each of the 46 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 • 21 Fuel-ups

  Property of dreiss

• 23.6 Avg MPG

• Dah Ponti

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jan 2016 • 138 Fuel-ups

  Property of Waynewec

• 24.7 Avg MPG

• Grand prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Jan 2018 • 246 Fuel-ups

  Property of KristenLeeAdams

• 23.9 Avg MPG

• My Grand Prix 2008

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added May 2018 • 33 Fuel-ups

  Property of jlm226

• 32.1 Avg MPG

• Pontiac Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added May 2018 • 99 Fuel-ups

  Property of dmueller22

• 23.0 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed
  Added Dec 2017 • 93 Fuel-ups

  Property of mjm16

• 16.9 Avg MPG

• My Grand Prix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Jun 2020 • 21 Fuel-ups

  Property of dbraun4

• 25.2 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

• OL WENCH

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jul 2018 • 36 Fuel-ups

  Property of Bdkarma

• 20.4 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

• GrandPrix

  2008 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Feb 2019 • 8 Fuel-ups

  Property of viperbono

• 20.5 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

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