Based on data from 45 vehicles, 2,416 fuel-ups and 386,475 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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• TJ

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed Sport Utility
  Added May 2021 • 19 Fuel-ups

  Property of jpd

• 12.4 Avg MPG

• TJ Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added Mar 2021 • 19 Fuel-ups

  Property of joet13

• 15.1 Avg MPG

• My TJ

  1998 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed
  Added Mar 2020 • 77 Fuel-ups

  Property of bradini_houdini

• 17.0 Avg MPG

• Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed Sport Utility
  Added Jul 2022 • 15 Fuel-ups

  Property of Metalheadspey

• 23.1 Avg MPG

• My TJ

  1998 Jeep TJ Sahara 4.0L L6 GAS Manual 5 Speed
  Added Jun 2022 • 23 Fuel-ups

  Property of gonzobot1

• 13.6 Avg MPG

• Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed
  Added Mar 2017 • 136 Fuel-ups

  Property of Spack

• 17.8 Avg MPG

• Jeep TJ

  1998 Jeep TJ Sahara 4.0L L6 GAS Automatic 3 Speed
  Added Aug 2018 • 9 Fuel-ups

  Property of Exploder

• 14.8 Avg MPG

• TJ

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed Sport Utility
  Added Sep 2019 • 10 Fuel-ups

  Property of ccornwell

• 20.8 Avg MPG

• My TJ

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added Mar 2020 • 30 Fuel-ups

  Property of daisies1280

• 12.6 Avg MPG

• Jeep TJ Sport

  1998 Jeep TJ Sport 4.0L L6 GAS Automatic 3 Speed
  Added Mar 2019 • 86 Fuel-ups

  Property of cottonpeters

• 12.7 Avg MPG

• 1998 Jeep Wrangler Sport 'Pepper'

  1998 Jeep TJ Sport 4.0L L6 GAS Automatic 3 Speed
  Added Mar 2017 • 34 Fuel-ups

  Property of JoslinKies

• 13.1 Avg MPG

• My TJ

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added Jul 2020 • 4 Fuel-ups

  Property of turtle2020

• 13.5 Avg MPG

• My TJ

  1998 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added May 2020 • 8 Fuel-ups

  Property of Jakestong

• 15.6 Avg MPG

• Wrangler

  1998 Jeep TJ Sahara 4.0L L6 GAS Manual 5 Speed
  Added Dec 2019 • 54 Fuel-ups

  Property of racaz

• 16.7 Avg MPG

• My TJ

  1998 Jeep TJ Sahara 4.0L L6 GAS Manual 5 Speed
  Added May 2019 • 17 Fuel-ups

  Property of cory1282

• 14.1 Avg MPG

• Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed
  Added Mar 2017 • 73 Fuel-ups

  Property of dantracy93

• 12.7 Avg MPG

• My TJ

  1998 Jeep TJ Sport 4.0L L6 GAS Automatic 3 Speed
  Added Feb 2019 • 3 Fuel-ups

  Property of lazzy

• 11.5 Avg MPG

• Heep

  1998 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed Sport Utility
  Added Oct 2017 • 3 Fuel-ups

  Property of Chester70

• 10.8 Avg MPG

• 98 Wrangler

  1998 Jeep TJ Sahara 4.0L L6 GAS Standard 5 Speed Sport Utility
  Added May 2016 • 27 Fuel-ups

  Property of Brgruell

• 17.1 Avg MPG

• Jeep

  1998 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed Sport Utility
  Added Oct 2017 • 10 Fuel-ups

  Property of cfuglebe

• 30.6 Avg MPG

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