Based on data from 38 vehicles, 2,513 fuel-ups and 608,444 miles of driving, the 1999 Pontiac Grand Am gets a combined Avg MPG of 23.06 with a 0.17 MPG margin of error.

Any Engine Type 2.4L L4 GAS (3) 3.4L V6 GAS (12) L4 GAS (6) V6 GAS (12) Any Body Style Sedan (1) Coupe (2) Any Submodel GT (5) SE (12) Other (21)

Below you can see a distribution of the fuel-ups with 157 outliers (5.88%) removed.

Following shows the average MPG of each of the 38 vehicles in the system.

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• #2

  1999 Pontiac Grand Am GAS V6
  Added Apr 2013 • 3 Fuel-ups

  Property of dwall88

• 392.0 Avg MPG

• GrandAm

  1999 Pontiac Grand Am SE Automatic 4 Speed
  Added May 2019 • 129 Fuel-ups

  Property of rpeadrogmailcom

• 25.2 Avg MPG

• Grand Am

  1999 Pontiac Grand Am GAS L4
  Added Mar 2013 • 3 Fuel-ups

  Property of jbrigance

• 30.5 Avg MPG

• Pontiac GrandMa

  1999 Pontiac Grand Am GAS V6
  Added Aug 2012 • 93 Fuel-ups

  Property of Lango

• 23.5 Avg MPG

• GrandAm

  1999 Pontiac Grand Am GAS V6
  Added Mar 2012 • 11 Fuel-ups

  Property of Oldhaminator

• 22.5 Avg MPG

• Silver Stallion

  1999 Pontiac Grand Am GAS L4
  Added Dec 2008 • 181 Fuel-ups

  Property of finhead2

• 22.1 Avg MPG

• Grand Am

  1999 Pontiac Grand Am GAS V6
  Added Jul 2010 • 117 Fuel-ups

  Property of jocloud31

• 24.3 Avg MPG

• The Silver Beast

  1999 Pontiac Grand Am
  Added Mar 2009 • 121 Fuel-ups

  Property of Khalas

• 23.9 Avg MPG

• Jordan's

  1999 Pontiac Grand Am GAS V6
  Added Nov 2013 • 16 Fuel-ups

  Property of jordanmikkelsen

• 22.8 Avg MPG

• Silver Fox

  1999 Pontiac Grand Am GAS L4
  Added Aug 2008 • 134 Fuel-ups

  Property of csaapproved

• 23.7 Avg MPG

• White Grand Am

  1999 Pontiac Grand Am GAS V6
  Added Jun 2011 • 13 Fuel-ups

  Property of MKEGuy

• 21.2 Avg MPG

• 99 Grand Am SE2

  1999 Pontiac Grand Am GAS V6
  Added Dec 2010 • 48 Fuel-ups

  Property of mrklean

• 24.8 Avg MPG

• Pontiac Goat "nvr-goin-2-b"

  1999 Pontiac Grand Am
  Added Sep 2009 • 26 Fuel-ups

  Property of SoulSavd

• 20.0 Avg MPG

• 1999 2-door V6 Grand Am

  1999 Pontiac Grand Am GAS V6
  Added Aug 2008 • 28 Fuel-ups

  Property of ams85

• 18.7 Avg MPG

• Hot and Bumpy

  1999 Pontiac Grand Am GAS V6
  Added Jun 2009 • 10 Fuel-ups

  Property of eracman

• 17.6 Avg MPG

• Black Magic

  1999 Pontiac Grand Am GAS V6
  Added Aug 2008 • 21 Fuel-ups

  Property of fty9erfan990

• 24.2 Avg MPG

• Grand Am

  1999 Pontiac Grand Am GAS L4
  Added Aug 2008 • 5 Fuel-ups

  Property of RRyanC

• 21.4 Avg MPG

• Grandy

  1999 Pontiac Grand Am GAS L4
  Added Jan 2009 • 40 Fuel-ups

  Property of kujayhawk9

• 22.8 Avg MPG

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