Based on data from 35 vehicles, 1,011 fuel-ups and 195,118 miles of driving, the 1999 Jeep TJ gets a combined Avg MPG of 14.42 with a 0.17 MPG margin of error.

Any Engine Type 2.5L L4 GAS (11) 4.0L L6 GAS (24) Any Body Style Sport Utility (12) Hardtop (1) Any Submodel Sahara (10) SE (11) Sport (14)

Below you can see a distribution of the fuel-ups with 55 outliers (5.16%) removed.

Following shows the average MPG of each of the 35 vehicles in the system.

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• TJ Jeep

  1999 Jeep TJ Sport 4.0L L6 GAS Automatic 3 Speed Sport Utility
  Added May 2023 • 16 Fuel-ups

  Property of glendafuelly

• 12.5 Avg MPG

• My TJ

  1999 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed
  Added Dec 2022 • 9 Fuel-ups

  Property of DPVW

• 19.6 Avg MPG

• Red 5

  1999 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed Sport Utility
  Added Mar 2019 • 250 Fuel-ups

  Property of Tomahawk05

• 16.2 Avg MPG

• Jeep TJ Sparrow

  1999 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed Sport Utility
  Added Apr 2020 • 15 Fuel-ups

  Property of TyPi

• 16.1 Avg MPG

• My TJ

  1999 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed
  Added Jan 2019 • 7 Fuel-ups

  Property of SeanBaz

• 19.0 Avg MPG

• Jeep 2.0

  1999 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added Mar 2019 • 45 Fuel-ups

  Property of IHateSigningIn

• 13.2 Avg MPG

• T-Dad TJ

  1999 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed Sport Utility
  Added Aug 2016 • 12 Fuel-ups

  Property of EcoDaddio

• 18.4 Avg MPG

• Pepper

  1999 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed Hardtop
  Added Dec 2015 • 30 Fuel-ups

  Property of mikeyboyaz

• 16.8 Avg MPG

• My TJ

  1999 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed
  Added Nov 2018 • 80 Fuel-ups

  Property of brady26

• 14.3 Avg MPG

• My TJ

  1999 Jeep TJ SE 2.5L L4 GAS Automatic 3 Speed
  Added Dec 2017 • 7 Fuel-ups

  Property of ladale

• 10.8 Avg MPG

• the beast

  1999 Jeep TJ Sahara 4.0L L6 GAS Automatic 3 Speed
  Added Aug 2018 • 9 Fuel-ups

  Property of kyliejwillis

• 11.4 Avg MPG

• My TJ

  1999 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed
  Added Sep 2017 • 81 Fuel-ups

  Property of myrejeep

• 15.1 Avg MPG

• My TJ

  1999 Jeep TJ Sport 4.0L L6 GAS Standard 5 Speed
  Added Oct 2017 • 4 Fuel-ups

  Property of chibaway

• 13.0 Avg MPG

• 99 Jeep

  1999 Jeep TJ Sahara 4.0L L6 GAS Automatic 3 Speed Sport Utility
  Added Sep 2018 • 182 Fuel-ups

  Property of sic4672

• 16.2 Avg MPG

• Green Jeep

  1999 Jeep TJ Sahara 4.0L L6 GAS Standard 5 Speed
  Added Mar 2017 • 4 Fuel-ups

  Property of werkes

• 14.4 Avg MPG

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