Based on data from 27 vehicles, 1,571 fuel-ups and 412,061 miles of driving, the 1998 Pontiac Grand Prix gets a combined Avg MPG of 21.07 with a 0.25 MPG margin of error.

Any Engine Type 3.1L V6 GAS (2) 3.8L V6 GAS (13) V6 GAS (12) Any Body Style Sedan (3) Coupe (1) Any Submodel SE (3) GT (6) GTP (6) Other (12)

Below you can see a distribution of the fuel-ups with 26 outliers (1.63%) removed.

Following shows the average MPG of each of the 27 vehicles in the system.

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• My Grand Prix

  1998 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Dec 2021 • 15 Fuel-ups

  Property of jpiekar3

• 13.7 Avg MPG

• Jarl Ballin'

  1998 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2016 • 167 Fuel-ups

  Property of DAVe3283

• 19.7 Avg MPG

• Grand Prix

  1998 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed
  Added Apr 2019 • 402 Fuel-ups

  Property of dteague92

• 26.0 Avg MPG

• GTP

  1998 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Speed Coupe
  Added Nov 2018 • 246 Fuel-ups

  Property of dpickett63

• 26.9 Avg MPG

• Prix

  1998 Pontiac Grand Prix SE 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Apr 2019 • 5 Fuel-ups

  Property of erwin8t

• 20.6 Avg MPG

• My Grand Prix

  1998 Pontiac Grand Prix SE 3.8L V6 GAS Automatic 4 Speed
  Added Apr 2018 • 3 Fuel-ups

  Property of Simba_dont_play

• 14.5 Avg MPG

• My Grand Prix

  1998 Pontiac Grand Prix SE 3.1L V6 GAS Automatic 4 Speed
  Added May 2017 • 6 Fuel-ups

  Property of aarchuleta50

• 18.1 Avg MPG

• My Grand Prix

  1998 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 50 Fuel-ups

  Property of klg91189

• 24.3 Avg MPG

• 98 GP

  1998 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Dec 2016 • 156 Fuel-ups

  Property of sdlarson7

• 20.5 Avg MPG

• My Grand Prix

  1998 Pontiac Grand Prix GTP 3.8L GAS V6 Automatic 4 Sedan (4 Door)
  Added Mar 2015 • 6 Fuel-ups

  Property of Pockets88

• 18.8 Avg MPG

• '98 GTP

  1998 Pontiac Grand Prix GTP 3.8L GAS V6 Automatic 4 Coupe (2 Door)
  Added Aug 2014 • 7 Fuel-ups

  Property of Ryan9841

• 22.0 Avg MPG

• Grandae

  1998 Pontiac Grand Prix GAS V6
  Added Jan 2009 • 32 Fuel-ups

  Property of mpiekart

• 23.5 Avg MPG

• The GTP

  1998 Pontiac Grand Prix GTP 3.8L V6 GAS Automatic 4 Coupe (2 Door)
  Added Jan 2011 • 184 Fuel-ups

  Property of norm4life

• 23.5 Avg MPG

• Pontiac

  1998 Pontiac Grand Prix GAS V6
  Added Jan 2014 • 12 Fuel-ups

  Property of tyrell456

• 18.1 Avg MPG

• Pace Car

  1998 Pontiac Grand Prix GAS V6
  Added Aug 2012 • 4 Fuel-ups

  Property of microterf

• 171.2 Avg MPG

• GPGT

  1998 Pontiac Grand Prix GAS V6
  Added May 2011 • 87 Fuel-ups

  Property of playbass06

• 21.2 Avg MPG

• Grand Prix

  1998 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 52 Fuel-ups

  Property of bllacertae

• 15.5 Avg MPG

• Pontiac GP

  1998 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2017 • 42 Fuel-ups

  Property of adelatorre

• 20.4 Avg MPG

• Gold Car

  1998 Pontiac Grand Prix GT 3.8L V6 GAS Automatic 4 Speed
  Added Oct 2017 • 84 Fuel-ups

  Property of Prinster

• 22.6 Avg MPG

• Pontiac Grand Prix GTP

  1998 Pontiac Grand Prix GAS V6
  Added Oct 2009 • 84 Fuel-ups

  Property of foghelmut

• 17.8 Avg MPG

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