Based on data from 42 vehicles, 3,494 fuel-ups and 1,174,571 miles of driving, the 2015 GMC Yukon XL gets a combined Avg MPG of 15.42 with a 0.13 MPG margin of error.

Any Engine Type 5.3L V8 FLEX (14) 6.2L V8 FLEX (25) V8 GAS (2) Any Body Style Sport Utility (15) Any Submodel SLE (5) SLT (9) Denali (26) Other (2)

Below you can see a distribution of the fuel-ups with 115 outliers (3.19%) removed.

Following shows the average MPG of each of the 42 vehicles in the system.

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• Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Aug 2016 • 235 Fuel-ups

  Property of rowallen9501

• 17.2 Avg MPG

• 2015 Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Mar 2019 • 164 Fuel-ups

  Property of scott93225

• 13.6 Avg MPG

• Yukon

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Mar 2021 • 54 Fuel-ups

  Property of elid

• 15.8 Avg MPG

• Yukon XL Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed Sport Utility
  Added Jun 2020 • 109 Fuel-ups

  Property of islandhopper

• 15.3 Avg MPG

• Yukon

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed Sport Utility
  Added Sep 2018 • 330 Fuel-ups

  Property of AnBerCaLy

• 14.4 Avg MPG

• Stacy's Yukon

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added May 2017 • 288 Fuel-ups

  Property of wiegelsa

• 14.5 Avg MPG

• Yukon XL DENALI

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 6 Speed Sport Utility
  Added Jul 2021 • 32 Fuel-ups

  Property of msjs91011

• 15.3 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Jul 2021 • 77 Fuel-ups

  Property of Bpospical

• 15.2 Avg MPG

• Yukon XL “DONNY”

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 6 Speed Sport Utility
  Added Apr 2022 • 19 Fuel-ups

  Property of TylerSc

• 14.4 Avg MPG

• Moose

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Aug 2017 • 158 Fuel-ups

  Property of walxalone

• 16.5 Avg MPG

• Sherman

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Oct 2018 • 428 Fuel-ups

  Property of RDailey55

• 19.3 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2021 • 44 Fuel-ups

  Property of 2chevys1ford

• 17.1 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Nov 2020 • 144 Fuel-ups

  Property of drselch

• 17.4 Avg MPG

• 2015 GMC Yukon XL

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added May 2022 • 9 Fuel-ups

  Property of blrains706

• 16.2 Avg MPG

• Yukon XL

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2018 • 85 Fuel-ups

  Property of odsail

• 15.7 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Apr 2022 • 28 Fuel-ups

  Property of agiwojna

• 10.7 Avg MPG

• Betty

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Oct 2017 • 133 Fuel-ups

  Property of hbturner85

• 16.9 Avg MPG

• Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Jul 2019 • 105 Fuel-ups

  Property of MikeGes

• 15.1 Avg MPG

• GMC Hearse

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Oct 2017 • 203 Fuel-ups

  Property of Jonesjetta

• 16.9 Avg MPG

• Gmc Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Mar 2017 • 28 Fuel-ups

  Property of Straykat

• 24.5 Avg MPG

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