Based on data from 45 vehicles, 2,414 fuel-ups and 386,257 miles of driving, the 1998 Jeep TJ gets a combined Avg MPG of 14.20 with a 0.12 MPG margin of error.

Any Engine Type 2.5L L4 GAS (10) 4.0L L6 GAS (35) Any Body Style Sport Utility (16) Any Submodel SE (10) Sahara (10) Sport (25)

Below you can see a distribution of the fuel-ups with 84 outliers (3.36%) removed.

Following shows the average MPG of each of the 45 vehicles in the system.

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• My TJ

  1998 Jeep TJ Sport 4.0L L6 GAS Automatic 3 Speed Sport Utility
  Added Sep 2018 • 188 Fuel-ups

  Property of Rotora

• 14.7 Avg MPG

• Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Automatic 3 Speed Sport Utility
  Added Oct 2014 • 172 Fuel-ups

  Property of 91loriderhog

• 13.5 Avg MPG

• My TJ

  1998 Jeep TJ SE 2.5L L4 GAS Automatic 3 Speed
  Added Aug 2022 • 49 Fuel-ups

  Property of Justthorne71

• 12.9 Avg MPG

• My TJ

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added Oct 2019 • 101 Fuel-ups

  Property of Dean2

• 13.5 Avg MPG

• Jeep TJ

  1998 Jeep TJ SE 2.5L L4 GAS Standard 5 Speed Sport Utility
  Added Feb 2018 • 261 Fuel-ups

  Property of randyemtp

• 15.9 Avg MPG

• My TJ

  1998 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed
  Added Sep 2020 • 224 Fuel-ups

  Property of mushdogs

• 16.6 Avg MPG

• Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added Aug 2022 • 47 Fuel-ups

  Property of phipps33

• 15.3 Avg MPG

• Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed
  Added Sep 2016 • 189 Fuel-ups

  Property of smashtorrent

• 13.2 Avg MPG

• My TJ

  1998 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed
  Added May 2023 • 17 Fuel-ups

  Property of breuker007

• 14.2 Avg MPG

• Jeep TJ

  1998 Jeep TJ Sahara 4.0L L6 GAS Automatic 3 Speed
  Added Mar 2017 • 31 Fuel-ups

  Property of ldrechsel

• 13.7 Avg MPG

• Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Sport Utility
  Added Apr 2018 • 49 Fuel-ups

  Property of Loonyjeep

• 13.1 Avg MPG

• Kingfisher

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added Dec 2019 • 165 Fuel-ups

  Property of Owl700

• 13.8 Avg MPG

• Jeep

  1998 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed Sport Utility
  Added Oct 2021 • 19 Fuel-ups

  Property of RJJA

• 14.9 Avg MPG

• Jeep

  1998 Jeep TJ SE 2.5L L4 GAS Standard 5 Speed
  Added Mar 2017 • 8 Fuel-ups

  Property of duallydad

• 9.9 Avg MPG

• DustyRoads

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed Sport Utility
  Added Apr 2021 • 95 Fuel-ups

  Property of Randaron

• 12.0 Avg MPG

• My TJ

  1998 Jeep TJ SE 2.5L L4 GAS Standard 5 Speed
  Added Jun 2017 • 3 Fuel-ups

  Property of truewakeboarder

• 24.9 Avg MPG

• My TJ

  1998 Jeep TJ Sahara 4.0L L6 GAS Automatic 3 Speed
  Added Nov 2022 • 31 Fuel-ups

  Property of txcrash

• 15.1 Avg MPG

• Jeep

  1998 Jeep TJ SE 2.5L L4 GAS Standard 5 Speed Sport Utility
  Added Sep 2016 • 86 Fuel-ups

  Property of fuelee

• 16.9 Avg MPG

• Jeep TJ

  1998 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed Sport Utility
  Added Dec 2017 • 110 Fuel-ups

  Property of BJohnston

• 12.7 Avg MPG

• Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed
  Added Feb 2017 • 113 Fuel-ups

  Property of joshlike

• 12.3 Avg MPG

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