Based on data from 34 vehicles, 970 fuel-ups and 187,400 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 (23) Any Body Style Sport Utility (12) Hardtop (1) Any Submodel Sahara (10) SE (11) Sport (13)

Below you can see a distribution of the fuel-ups with 54 outliers (5.27%) removed.

Following shows the average MPG of each of the 34 vehicles in the system.

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• Jeep

  1999 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added Dec 2022 • 12 Fuel-ups

  Property of up_nort

• 13.6 Avg MPG

• Jeep

  1999 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added May 2023 • 18 Fuel-ups

  Property of mschmitt8

• 14.9 Avg MPG

• A Little Bit Twisted

  1999 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed
  Added Sep 2019 • 25 Fuel-ups

  Property of brookeasmith13

• 15.6 Avg MPG

• Chili Jeep

  1999 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed Sport Utility
  Added Jun 2022 • 14 Fuel-ups

  Property of nevenelestate

• 16.4 Avg MPG

• Black TJ

  1999 Jeep TJ Sahara 4.0L L6 GAS Manual 5 Speed Sport Utility
  Added Apr 2019 • 44 Fuel-ups

  Property of sakeller29

• 15.0 Avg MPG

• My TJ

  1999 Jeep TJ Sahara 4.0L L6 GAS Manual 5 Speed
  Added Jul 2023 • 11 Fuel-ups

  Property of ksbuchanan

• 15.7 Avg MPG

• My TJ

  1999 Jeep TJ Sahara 4.0L L6 GAS Automatic 3 Speed
  Added May 2023 • 90 Fuel-ups

  Property of jacobjayn

• 12.1 Avg MPG

• Jeep

  1999 Jeep TJ Sahara 4.0L L6 GAS Automatic 3 Speed Sport Utility
  Added Nov 2023 • 9 Fuel-ups

  Property of Bignick73

• 15.0 Avg MPG

• Jeep

  1999 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed Sport Utility
  Added Aug 2021 • 21 Fuel-ups

  Property of Bakmah

• 15.0 Avg MPG

• TJ

  1999 Jeep TJ Sahara 4.0L L6 GAS Automatic 3 Speed
  Added Feb 2022 • 12 Fuel-ups

  Property of tracymairead

• 13.8 Avg MPG

• My Jeep

  1999 Jeep TJ Sport 4.0L L6 GAS Automatic 3 Speed
  Added Oct 2017 • 7 Fuel-ups

  Property of Dcampbell

• 17.4 Avg MPG

• Chopper

  1999 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed Sport Utility
  Added Mar 2020 • 34 Fuel-ups

  Property of Lpg975

• 25.9 Avg MPG

• My TJ

  1999 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added Apr 2019 • 74 Fuel-ups

  Property of wsalisbury

• 13.9 Avg MPG

• Jeep TJ

  1999 Jeep TJ SE 2.5L L4 GAS Automatic 3 Speed
  Added Jun 2018 • 34 Fuel-ups

  Property of hortonmd

• 13.8 Avg MPG

• Fishing Rod

  1999 Jeep TJ Sport 4.0L L6 GAS Manual 5 Speed
  Added May 2020 • 13 Fuel-ups

  Property of icey77

• 16.9 Avg MPG

• TJ

  1999 Jeep TJ Sahara 4.0L L6 GAS Automatic 3 Speed
  Added Aug 2022 • 5 Fuel-ups

  Property of Pherrante

• 14.9 Avg MPG

• Jeep

  1999 Jeep TJ Sahara 4.0L L6 GAS Manual 5 Speed Sport Utility
  Added Feb 2021 • 17 Fuel-ups

  Property of thunderwolf

• 13.0 Avg MPG

• 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

• Wrangler

  1999 Jeep TJ SE 2.5L L4 GAS Manual 5 Speed Sport Utility
  Added Dec 2018 • 60 Fuel-ups

  Property of boelter

• 15.0 Avg MPG

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