Based on data from 29 vehicles, 1,525 fuel-ups and 357,278 miles of driving, the 1999 Pontiac Grand Prix gets a combined Avg MPG of 19.94 with a 0.28 MPG margin of error.

Any Engine Type 3.8L V6 GAS (19) V6 GAS (10) Any Body Style Sedan (6) Coupe (4) Any Submodel SE (2) GTP (5) GT (12) Other (10)

Below you can see a distribution of the fuel-ups with 13 outliers (0.85%) removed.

Following shows the average MPG of each of the 29 vehicles in the system.

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• Rylie Jo's Pontiac

  1999 Pontiac Grand Prix GT 3,8L V6 GAS Automatic 4 Speed Coupe
  Added Oct 2017 • 15 Fuel-ups

  Property of RamjetJr

• 17.3 Avg MPG

• 1999 Grand Prix

  1999 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed Coupe
  Added Feb 2021 • 24 Fuel-ups

  Property of iamteeg

• 13.3 Avg MPG

• GTX

  1999 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed
  Added Nov 2017 • 18 Fuel-ups

  Property of atarii

• 37.8 Avg MPG

• 1999 Grand Prix

  1999 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Aug 2016 • 255 Fuel-ups

  Property of huttler

• 23.5 Avg MPG

• Grand Prix

  1999 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2010 • 149 Fuel-ups

  Property of MikeyG

• 15.5 Avg MPG

• Mike's GP

  1999 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Aug 2016 • 100 Fuel-ups

  Property of MikeyG

• 15.1 Avg MPG

• Pontiac

  1999 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed
  Added Feb 2017 • 145 Fuel-ups

  Property of joemoore02

• 23.8 Avg MPG

• My Grand REEEEEE

  1999 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2018 • 22 Fuel-ups

  Property of cartertower

• 17.1 Avg MPG

• Duane

  1999 Pontiac Grand Prix SE 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Mar 2014 • 73 Fuel-ups

  Property of buzz012

• 18.0 Avg MPG

• Grand Prix

  1999 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Dec 2016 • 12 Fuel-ups

  Property of Billc

• 17.2 Avg MPG

• Trucker Hat

  1999 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed Coupe
  Added Dec 2016 • 3 Fuel-ups

  Property of Squiblez

• 18.1 Avg MPG

• my work car

  1999 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed Sedan
  Added May 2016 • 5 Fuel-ups

  Property of trafather1

• 30.0 Avg MPG

• GP

  1999 Pontiac Grand Prix SE 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Aug 2015 • 3 Fuel-ups

  Property of Ranger1744

• 15.4 Avg MPG

• Grand Prix 99

  1999 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed Coupe
  Added Dec 2017 • 12 Fuel-ups

  Property of kilvingerj

• 19.8 Avg MPG

• Penelope

  1999 Pontiac Grand Prix GAS V6
  Added Jun 2014 • 13 Fuel-ups

  Property of mechcd

• 28.2 Avg MPG

• GTP

  1999 Pontiac Grand Prix GAS V6
  Added Dec 2013 • 18 Fuel-ups

  Property of sk8rax350

• 22.0 Avg MPG

• Dans Grand Prix

  1999 Pontiac Grand Prix GAS V6
  Added Jul 2012 • 6 Fuel-ups

  Property of derce927

• 22.3 Avg MPG

• Grand Prix GTP

  1999 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 77 Fuel-ups

  Property of Fireworks234

• 19.7 Avg MPG

• GTP

  1999 Pontiac Grand Prix GAS V6
  Added Jul 2011 • 127 Fuel-ups

  Property of rynoman03

• 23.1 Avg MPG

• Racekar

  1999 Pontiac Grand Prix GAS V6
  Added Oct 2013 • 4 Fuel-ups

  Property of hensleya1

• 25.4 Avg MPG

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