Based on data from 24 vehicles, 1,101 fuel-ups and 344,555 miles of driving, the 2021 GMC Yukon gets a combined Avg MPG of 17.20 with a 0.24 MPG margin of error.

Any Engine Type 3.0L L6 DIESEL (7) 5.3L V8 GAS (7) 6.2L V8 GAS (9) Any Body Style Sport Utility (6) Any Submodel SLE (1) AT4 (2) SLT (10) Denali (11)

Below you can see a distribution of the fuel-ups with 11 outliers (0.99%) removed.

Following shows the average MPG of each of the 24 vehicles in the system.

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• Yukon Denali

  2021 GMC Yukon Denali 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2021 • 94 Fuel-ups

  Property of pizzlerizzle

• 14.4 Avg MPG

• Yukon

  2021 GMC Yukon SLT 5.3L V8 GAS Automatic 10 Speed Sport Utility
  Added Mar 2023 • 45 Fuel-ups

  Property of Dancastro

• 18.2 Avg MPG

• My Yukon

  2021 GMC Yukon Denali 6.2L V8 GAS Automatic 10 Speed
  Added Sep 2023 • 29 Fuel-ups

  Property of dbecker744

• 15.7 Avg MPG

• Yukon AT4

  2021 GMC Yukon AT4 5.3L V8 GAS Automatic 10 Speed
  Added Sep 2021 • 151 Fuel-ups

  Property of KoepYuk

• 15.1 Avg MPG

• Courtney’s black Yukon Diesel

  2021 GMC Yukon SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2021 • 120 Fuel-ups

  Property of Motorist

• 20.6 Avg MPG

• My Yukon

  2021 GMC Yukon SLE 5.3L V8 GAS Automatic 10 Speed
  Added Oct 2021 • 113 Fuel-ups

  Property of geastman

• 19.0 Avg MPG

• 2021 Yukon

  2021 GMC Yukon Denali 6.2L V8 GAS Automatic 10 Speed
  Added Nov 2020 • 50 Fuel-ups

  Property of Gary645

• 18.5 Avg MPG

• Midnight Blue Yukon

  2021 GMC Yukon Denali 3.0L L6 DIESEL Automatic 10 Speed Sport Utility
  Added Feb 2021 • 60 Fuel-ups

  Property of TurboDiesel

• 22.5 Avg MPG

• YUKON

  2021 GMC Yukon SLT 3.0L L6 DIESEL Automatic 10 Speed Sport Utility
  Added Sep 2021 • 23 Fuel-ups

  Property of mikearmstrong99

• 18.1 Avg MPG

• 2021 Yukon Denali

  2021 GMC Yukon Denali 6.2L V8 GAS Automatic 10 Speed
  Added Jan 2021 • 128 Fuel-ups

  Property of defocars

• 16.1 Avg MPG

• 2021 GMC Yukon

  2021 GMC Yukon SLT 5.3L V8 GAS Automatic 10 Speed
  Added Sep 2022 • 36 Fuel-ups

  Property of LawMan02

• 18.6 Avg MPG

• Dmax Yukon

  2021 GMC Yukon Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2021 • 19 Fuel-ups

  Property of ryanrstone

• 21.9 Avg MPG

• Yvon

  2021 GMC Yukon SLT 5.3L V8 GAS Automatic 10 Speed
  Added Jan 2021 • 94 Fuel-ups

  Property of mikey23

• 19.4 Avg MPG

• Yukon Denali

  2021 GMC Yukon Denali 6.2L V8 GAS Automatic 10 Speed
  Added Apr 2023 • 14 Fuel-ups

  Property of MarinnaCole

• 20.1 Avg MPG

• Slater

  2021 GMC Yukon SLT 5.3L V8 GAS Automatic 10 Speed
  Added Aug 2021 • 43 Fuel-ups

  Property of brockon

• 16.5 Avg MPG

• My Yukon

  2021 GMC Yukon SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Nov 2022 • 9 Fuel-ups

  Property of tank22

• 19.1 Avg MPG

• Durakon

  2021 GMC Yukon SLT 3.0L L6 DIESEL Automatic 10 Speed Sport Utility
  Added Mar 2022 • 24 Fuel-ups

  Property of Mtnbound

• 26.5 Avg MPG

• Brittney's AT4

  2021 GMC Yukon AT4 5.3L V8 GAS Automatic 10 Speed Sport Utility
  Added Sep 2021 • 32 Fuel-ups

  Property of mjealey

• 15.8 Avg MPG

• 2021 Yukon

  2021 GMC Yukon Denali 6.2L V8 GAS Automatic 10 Speed
  Added Nov 2020 • 57 Fuel-ups

  Property of MicahWayne

• 14.7 Avg MPG

• Yukon Rental

  2021 GMC Yukon SLT Automatic 10 Speed Sport Utility
  Added Jul 2021 • 4 Fuel-ups

  Property of jrnickell

• 20.5 Avg MPG

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