Based on data from 219 vehicles, 17,603 fuel-ups and 4,490,374 miles of driving, the 2021 Jeep Gladiator gets a combined Avg MPG of 17.10 with a 0.06 MPG margin of error.

Any Engine Type 3.0L V6 DIESEL (57) 3.6L V6 GAS (158) Any Body Style Standard Cab Pickup (1) Crew Cab Pickup (75) Any Submodel Altitude (1) Texas Trail (1) 80th Anniversary (3) Willys Sport (3) High Altitude (4) 1.5 RS CVT Honda SENSING (10) Overland (19) Willys (20) Sport S (34) Mojave (48) Rubicon (76)

Below you can see a distribution of the fuel-ups with 712 outliers (3.89%) removed.

Following shows the average MPG of each of the 219 vehicles in the system.

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• Jeep

  2021 Jeep Gladiator Mojave 3.6L V6 GAS Automatic 8 Speed
  Added Jul 2021 • 135 Fuel-ups

  Property of ntr

• 20.7 Avg MPG

• My Gladiator

  2021 Jeep Gladiator Rubicon 3.6L V6 GAS Automatic 8 Speed Crew Cab Pickup
  Added Jun 2024 • 73 Fuel-ups

  Property of bobcatt67

• 12.2 Avg MPG

• My Gladiator

  2021 Jeep Gladiator Rubicon 3.6L V6 GAS Automatic 8 Speed
  Added Jan 2025 • 73 Fuel-ups

  Property of andyfc

• 13.2 Avg MPG

• Rubi Red

  2021 Jeep Gladiator Rubicon 3.0L V6 DIESEL Automatic 8 Speed
  Added Aug 2023 • 171 Fuel-ups

  Property of Tortuga41

• 23.4 Avg MPG

• My Gladiator

  2021 Jeep Gladiator Rubicon 3.0L V6 DIESEL Automatic 8 Speed
  Added Sep 2024 • 55 Fuel-ups

  Property of GuthrieCW

• 19.6 Avg MPG

• Gladiator

  2021 Jeep Gladiator Rubicon 3.6L V6 GAS Automatic 8 Speed
  Added Nov 2024 • 50 Fuel-ups

  Property of markwpriz

• 19.8 Avg MPG

• My Gladiator

  2021 Jeep Gladiator Mojave 3.6L V6 GAS Automatic 8 Speed
  Added Oct 2022 • 268 Fuel-ups

  Property of gladiatot

• 16.0 Avg MPG

• Sue’s Gecko Gladiator

  2021 Jeep Gladiator Rubicon 3.6L V6 GAS Automatic 8 Speed
  Added Apr 2022 • 101 Fuel-ups

  Property of rekerr

• 16.8 Avg MPG

• Jeep

  2021 Jeep Gladiator Mojave 3.6L V6 GAS Automatic 8 Speed Crew Cab Pickup
  Added Mar 2023 • 222 Fuel-ups

  Property of monsieur_cox

• 17.1 Avg MPG

• My Gladiator

  2021 Jeep Gladiator Sport S 3.6L V6 GAS Manual 6 Speed
  Added Nov 2021 • 132 Fuel-ups

  Property of KingWrangler

• 18.0 Avg MPG

• My Gladiator

  2021 Jeep Gladiator Mojave
  Added Nov 2020 • 281 Fuel-ups

  Property of prostatus

• 15.5 Avg MPG

• Jeep Truck

  2021 Jeep Gladiator Mojave 3.6L V6 GAS Manual 6 Speed Crew Cab Pickup
  Added Jan 2021 • 194 Fuel-ups

  Property of jut60

• 18.2 Avg MPG

• Gladiator

  2021 Jeep Gladiator Willys 3.6L V6 GAS Automatic 8 Speed Crew Cab Pickup
  Added Dec 2023 • 88 Fuel-ups

  Property of lowjo

• 15.7 Avg MPG

• Jeep Gladiator

  2021 Jeep Gladiator Rubicon 3.0L V6 DIESEL Automatic 8 Speed Crew Cab Pickup
  Added Feb 2021 • 419 Fuel-ups

  Property of kszys

• 23.2 Avg MPG

• My Gladiator

  2021 Jeep Gladiator Overland 3.0L V6 DIESEL Automatic 8 Speed
  Added Oct 2024 • 26 Fuel-ups

  Property of crashhero

• 22.1 Avg MPG

• Gladiator

  2021 Jeep Gladiator Rubicon 3.0L V6 DIESEL Automatic 8 Speed Crew Cab Pickup
  Added Oct 2020 • 170 Fuel-ups

  Property of kclendaniel

• 23.4 Avg MPG

• Stitch

  2021 Jeep Gladiator Mojave 3.6L V6 GAS Automatic 8 Speed
  Added Jun 2023 • 88 Fuel-ups

  Property of wildtaz21

• 19.0 Avg MPG

• My Gladiator

  2021 Jeep Gladiator High Altitude 3.6L V6 GAS Automatic 8 Speed
  Added Jan 2021 • 124 Fuel-ups

  Property of annaherod

• 16.7 Avg MPG

• My Gladiator

  2021 Jeep Gladiator Overland 3.6L V6 GAS Automatic 8 Speed
  Added Mar 2025 • 15 Fuel-ups

  Property of k9mcm

• 20.6 Avg MPG

• My Gladiator

  2021 Jeep Gladiator Rubicon 3.6L V6 GAS Automatic 8 Speed
  Added Aug 2021 • 131 Fuel-ups

  Property of AJBolian

• 14.2 Avg MPG

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