Based on data from 34 vehicles, 2,557 fuel-ups and 878,117 miles of driving, the 2015 GMC Yukon XL gets a combined Avg MPG of 15.37 with a 0.16 MPG margin of error.

Any Engine Type 5.3L V8 FLEX (12) 6.2L V8 FLEX (19) V8 GAS (2) Any Body Style Sport Utility (11) Any Submodel SLE (5) SLT (7) Denali (20) Other (2)

Below you can see a distribution of the fuel-ups with 55 outliers (2.11%) removed.

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

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• Yukon XL Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed Sport Utility
  Added Jun 2020 • 13 Fuel-ups

  Property of islandhopper

• 13.2 Avg MPG

• Stacy's Yukon

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added May 2017 • 153 Fuel-ups

  Property of wiegelsa

• 15.2 Avg MPG

• 2015 Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Mar 2019 • 136 Fuel-ups

  Property of scott93225

• 13.7 Avg MPG

• Yukon XL

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2018 • 48 Fuel-ups

  Property of odsail

• 16.8 Avg MPG

• Sherman

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Oct 2018 • 343 Fuel-ups

  Property of RDailey55

• 19.1 Avg MPG

• GMC Hearse

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Oct 2017 • 146 Fuel-ups

  Property of Jonesjetta

• 17.1 Avg MPG

• Yukon

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed Sport Utility
  Added Sep 2018 • 218 Fuel-ups

  Property of AnBerCaLy

• 14.5 Avg MPG

• Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Jul 2019 • 48 Fuel-ups

  Property of MikeGes

• 15.3 Avg MPG

• Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Aug 2016 • 174 Fuel-ups

  Property of rowallen9501

• 17.0 Avg MPG

• Moose

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Aug 2017 • 101 Fuel-ups

  Property of walxalone

• 16.4 Avg MPG

• Betty

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Oct 2017 • 92 Fuel-ups

  Property of hbturner85

• 16.6 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

• Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Aug 2016 • 136 Fuel-ups

  Property of Olivaide

• 17.4 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Feb 2018 • 96 Fuel-ups

  Property of tracer311

• 15.8 Avg MPG

• Yukon XL Denali

  2015 GMC Yukon XL Denali
  Added Dec 2017 • 147 Fuel-ups

  Property of bthomsen

• 14.5 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Jul 2018 • 34 Fuel-ups

  Property of oswalt0

• 16.0 Avg MPG

• My Yukon XL new

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Apr 2017 • 43 Fuel-ups

  Property of ijatt

• 14.9 Avg MPG

• Yukon

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Mar 2018 • 24 Fuel-ups

  Property of mnBison

• 18.3 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Sep 2015 • 391 Fuel-ups

  Property of AbdurRaheem

• 11.4 Avg MPG

• Sold - 7/21/18 - 2015 Yukon XL Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Aug 2016 • 114 Fuel-ups

  Property of Kazsmir

• 13.4 Avg MPG

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