Based on data from 63 vehicles, 4,600 fuel-ups and 1,347,885 miles of driving, the 2005 Pontiac Grand Prix gets a combined Avg MPG of 21.92 with a 0.14 MPG margin of error.

Any Engine Type 3.8L V6 GAS (42) 5.3L V8 GAS (5) V6 GAS (15) Any Body Style Sedan (16) Any Submodel GTP (4) GXP (6) GT (18) Base (20) Other (15)

Below you can see a distribution of the fuel-ups with 149 outliers (3.14%) removed.

Following shows the average MPG of each of the 63 vehicles in the system.

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• Grand Prix

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 231 Fuel-ups

  Property of binaryerr

• 21.8 Avg MPG

• Pontiac Grand Prix (N)

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jan 2019 • 196 Fuel-ups

  Property of nmartens09

• 25.7 Avg MPG

• Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Mar 2018 • 289 Fuel-ups

  Property of zacharycunningham83

• 26.2 Avg MPG

• 2005 Pontiac Grand Prix GT

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 393 Fuel-ups

  Property of jeradcroghan

• 23.5 Avg MPG

• Pontiac Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Aug 2019 • 28 Fuel-ups

  Property of Fawky

• 22.8 Avg MPG

• My Grand Prix

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Dec 2017 • 102 Fuel-ups

  Property of Colton1500

• 23.4 Avg MPG

• Dads Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Jun 2020 • 166 Fuel-ups

  Property of Fonzy1974

• 7.7 Avg MPG

• Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 467 Fuel-ups

  Property of mfowler730

• 24.0 Avg MPG

• 2005 Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 23 Fuel-ups

  Property of gkarels

• 28.0 Avg MPG

• CompG

  2005 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Sep 2018 • 217 Fuel-ups

  Property of prixxjohn21

• 19.8 Avg MPG

• Grand Prix

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

  Property of Magnaman03

• 21.0 Avg MPG

• Grand Prix

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed Sedan
  Added May 2016 • 130 Fuel-ups

  Property of silliwidej

• 23.2 Avg MPG

• Grand Prix GXP

  2005 Pontiac Grand Prix GXP 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2016 • 552 Fuel-ups

  Property of msteiner17

• 20.3 Avg MPG

• My Grand Prix

  2005 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Aug 2019 • 7 Fuel-ups

  Property of isugrad99

• 21.6 Avg MPG

• 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

• Grand Prix

  2005 Pontiac Grand Prix 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2019 • 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

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