Based on data from 50 vehicles, 4,528 fuel-ups and 1,424,020 miles of driving, the 2015 GMC Yukon XL gets a combined Avg MPG of 14.77 with a 0.10 MPG margin of error.

Any Engine Type 5.3L V8 FLEX (19) 6.2L V8 FLEX (28) V8 GAS (2) Any Body Style Sport Utility (17) Any Submodel SLE (9) SLT (10) Denali (29) Other (2)

Below you can see a distribution of the fuel-ups with 138 outliers (2.96%) removed.

Following shows the average MPG of each of the 50 vehicles in the system.

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• My Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Nov 2020 • 346 Fuel-ups

  Property of drselch

• 17.3 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Apr 2022 • 125 Fuel-ups

  Property of agiwojna

• 13.4 Avg MPG

• Moose

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Aug 2017 • 252 Fuel-ups

  Property of walxalone

• 16.7 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Jul 2021 • 189 Fuel-ups

  Property of Bpospical

• 14.6 Avg MPG

• Betty

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Oct 2017 • 207 Fuel-ups

  Property of hbturner85

• 17.1 Avg MPG

• 2015 GMC Yukon XL

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added May 2022 • 116 Fuel-ups

  Property of blrains706

• 15.4 Avg MPG

• Yukon

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed Sport Utility
  Added Aug 2022 • 492 Fuel-ups

  Property of NailGirl

• 14.2 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Feb 2023 • 79 Fuel-ups

  Property of eightydolla

• 12.5 Avg MPG

• Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 6 Speed
  Added Mar 2024 • 12 Fuel-ups

  Property of simeonberns

• 17.5 Avg MPG

• Stacy's Yukon

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added May 2017 • 401 Fuel-ups

  Property of wiegelsa

• 14.2 Avg MPG

• Yukon XL DENALI

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 6 Speed Sport Utility
  Added Jul 2021 • 71 Fuel-ups

  Property of msjs91011

• 14.2 Avg MPG

• #26 2015 GMC Yukon XL

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Jul 2024 • 15 Fuel-ups

  Property of SCSD3-Transportation

• 17.4 Avg MPG

• #25 2015 GMC Yukon XL

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Jul 2024 • 9 Fuel-ups

  Property of SCSD3-Transportation

• 15.5 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

• My Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Apr 2023 • 5 Fuel-ups

  Property of 6_7KR

• 13.1 Avg MPG

• Yukon XL

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2018 • 130 Fuel-ups

  Property of odsail

• 15.2 Avg MPG

• Yukon

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Mar 2021 • 126 Fuel-ups

  Property of elid

• 15.0 Avg MPG

• 2015 Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Mar 2019 • 167 Fuel-ups

  Property of scott93225

• 13.6 Avg MPG

• Yukon XL Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed Sport Utility
  Added Jun 2020 • 180 Fuel-ups

  Property of islandhopper

• 16.1 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Sep 2022 • 19 Fuel-ups

  Property of dirte57

• 14.6 Avg MPG

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