Based on data from 68 vehicles, 4,731 fuel-ups and 1,363,075 miles of driving, the 2005 Pontiac Grand Prix gets a combined Avg MPG of 21.94 with a 0.14 MPG margin of error.

Any Engine Type 3.8L V6 GAS (47) 5.3L V8 GAS (5) V6 GAS (15) Any Body Style Sedan (20) Any Submodel GTP (5) GXP (6) GT (20) Base (22) Other (15)

Below you can see a distribution of the fuel-ups with 134 outliers (2.75%) removed.

Following shows the average MPG of each of the 68 vehicles in the system.

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• Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2017 • 148 Fuel-ups

  Property of bigsmitty111

• 17.9 Avg MPG

• My Grand Prix

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added May 2019 • 5 Fuel-ups

  Property of ParkerEisy

• 24.2 Avg MPG

• Grand Prix GXP

  2005 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed
  Added Apr 2019 • 6 Fuel-ups

  Property of nmerc

• 18.4 Avg MPG

• Pontiac Grand Prix (A)

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jan 2019 • 32 Fuel-ups

  Property of nmartens09

• 26.3 Avg MPG

• Grand Prix

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Nov 2016 • 71 Fuel-ups

  Property of kylejohannes

• 21.4 Avg MPG

• Car

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Apr 2021 • 99 Fuel-ups

  Property of jweedz

• 25.6 Avg MPG

• My Grand Prix

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Feb 2018 • 17 Fuel-ups

  Property of wikoli32

• 18.6 Avg MPG

• 2005 grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2017 • 109 Fuel-ups

  Property of ekocerkajr

• 22.5 Avg MPG

• GXP 2005

  2005 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed Sedan
  Added Oct 2015 • 130 Fuel-ups

  Property of jgill442

• 20.3 Avg MPG

• Pontiac GP

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Jan 2017 • 20 Fuel-ups

  Property of CriminalPilot

• 16.2 Avg MPG

• The GXP

  2005 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed Sedan
  Added May 2017 • 22 Fuel-ups

  Property of musichound11

• 17.7 Avg MPG

• My Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Dec 2017 • 5 Fuel-ups

  Property of travbuz

• 10.2 Avg MPG

• Sherry's 2005 Pontiac

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Dec 2017 • 7 Fuel-ups

  Property of gman350

• 21.0 Avg MPG

• My Car

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Aug 2014 • 125 Fuel-ups

  Property of ilrael

• 28.0 Avg MPG

• My Grand Prix

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Jan 2017 • 59 Fuel-ups

  Property of dennyknott

• 26.9 Avg MPG

• My Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Oct 2016 • 39 Fuel-ups

  Property of olseng

• 21.6 Avg MPG

• 2005 Pontiac Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Jul 2017 • 41 Fuel-ups

  Property of KytePheonix

• 26.1 Avg MPG

• Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Feb 2017 • 10 Fuel-ups

  Property of SugaBear73

• 16.5 Avg MPG

• Patrica

  2005 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 84 Fuel-ups

  Property of ebaldofsky

• 20.6 Avg MPG

• Kylie's Grand Prix

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 97 Fuel-ups

  Property of kpanzer

• 22.3 Avg MPG

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