Based on data from 31 vehicles, 1,026 fuel-ups and 231,764 miles of driving, the 1999 Pontiac Firebird gets a combined Avg MPG of 19.37 with a 0.32 MPG margin of error.

Any Engine Type 3.8L V6 GAS (5) 5.7L V8 GAS (15) V6 GAS (1) V8 GAS (9) Any Body Style Coupe (10) Any Submodel Formula (1) Base (5) Trans Am (14) Other (11)

Below you can see a distribution of the fuel-ups with 7 outliers (0.68%) removed.

Following shows the average MPG of each of the 31 vehicles in the system.

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• Trans Am

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Automatic 4 Speed Coupe
  Added Oct 2017 • 266 Fuel-ups

  Property of fire089

• 17.3 Avg MPG

• BGCTA

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Manual 6 Speed Coupe
  Added Mar 2023 • 6 Fuel-ups

  Property of cuda6pak

• 19.0 Avg MPG

• My Firebird

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Automatic 4 Speed
  Added Sep 2023 • 3 Fuel-ups

  Property of RT_Hemi_AWD

• 19.4 Avg MPG

• TRANS AM

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS
  Added Mar 2019 • 131 Fuel-ups

  Property of grantsburg

• 22.7 Avg MPG

• My Firebird

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Automatic 4 Speed
  Added Jul 2023 • 5 Fuel-ups

  Property of Sweetlady76

• 12.8 Avg MPG

• Blood and Thunder

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Manual 6 Speed
  Added Apr 2020 • 19 Fuel-ups

  Property of mijbac117

• 19.5 Avg MPG

• 1999 Pontiac Trans Am nonWS6

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Automatic 4 Speed Coupe
  Added May 2021 • 5 Fuel-ups

  Property of Stevar

• 19.5 Avg MPG

• Becky The Trans am

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Manual 6 Speed
  Added May 2019 • 141 Fuel-ups

  Property of Remy_364

• 13.8 Avg MPG

• My Firebird

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Automatic 4 Speed
  Added Feb 2019 • 88 Fuel-ups

  Property of nsculver

• 20.6 Avg MPG

• Trash Can

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Manual 6 Speed Coupe
  Added Jun 2017 • 29 Fuel-ups

  Property of calytaco

• 20.8 Avg MPG

• The Firebird

  1999 Pontiac Firebird 3.8L V6 GAS Automatic 4 Speed
  Added Jun 2018 • 32 Fuel-ups

  Property of richcz28

• 24.6 Avg MPG

• Jeffrey

  1999 Pontiac Firebird 3.8L V6 GAS Automatic Coupe
  Added Oct 2017 • 55 Fuel-ups

  Property of Red4Golf710

• 23.2 Avg MPG

• The Bird

  1999 Pontiac Firebird 3.8L V6 GAS Automatic 4 Speed Coupe
  Added Feb 2014 • 24 Fuel-ups

  Property of caleb102394

• 22.4 Avg MPG

• Blood Diamond

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Automatic 4 Speed Coupe
  Added May 2015 • 11 Fuel-ups

  Property of DUBS2328

• 14.2 Avg MPG

• Bird

  1999 Pontiac Firebird 3.8L V6 GAS Automatic 4 Speed Coupe
  Added Jun 2014 • 41 Fuel-ups

  Property of ThirdeYe

• 23.2 Avg MPG

• Trans Am

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Standard 6 Speed
  Added Dec 2015 • 6 Fuel-ups

  Property of para38s

• 20.8 Avg MPG

• Firebird

  1999 Pontiac Firebird GAS V6
  Added Aug 2008 • 13 Fuel-ups

  Property of sdkjr

• 17.4 Avg MPG

• Danii's 'Bird

  1999 Pontiac Firebird GAS V8
  Added Jan 2014 • 3 Fuel-ups

  Property of Setag68

• 15.2 Avg MPG

• Firebirdy

  1999 Pontiac Firebird Trans Am 5.7L V8 GAS Automatic 4 Speed Coupe
  Added Mar 2018 • 96 Fuel-ups

  Property of tammik

• 22.0 Avg MPG

• Firebird Formula

  1999 Pontiac Firebird GAS V8
  Added Mar 2013 • 14 Fuel-ups

  Property of 99Formula

• 22.6 Avg MPG

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