Based on data from 47 vehicles, 4,195 fuel-ups and 1,328,572 miles of driving, the 2015 GMC Yukon XL gets a combined Avg MPG of 14.75 with a 0.11 MPG margin of error.

Any Engine Type 5.3L V8 FLEX (17) 6.2L V8 FLEX (27) V8 GAS (2) Any Body Style Sport Utility (15) Any Submodel SLE (7) SLT (10) Denali (28) Other (2)

Below you can see a distribution of the fuel-ups with 139 outliers (3.21%) removed.

Following shows the average MPG of each of the 47 vehicles in the system.

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• Yukon XL “DONNY”

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 6 Speed Sport Utility
  Added Apr 2022 • 52 Fuel-ups

  Property of TylerSc

• 15.0 Avg MPG

• My Yukon XL-Gideon

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Feb 2023 • 12 Fuel-ups

  Property of KampSprinter

• 15.7 Avg MPG

• Denali

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Aug 2016 • 247 Fuel-ups

  Property of rowallen9501

• 17.2 Avg MPG

• Mystic

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Feb 2022 • 6 Fuel-ups

  Property of Max79

• 18.2 Avg MPG

• Yukon

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed Sport Utility
  Added Sep 2018 • 331 Fuel-ups

  Property of AnBerCaLy

• 14.4 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

• Yukon

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed Sport Utility
  Added Jun 2015 • 95 Fuel-ups

  Property of Moopz

• 18.5 Avg MPG

• My Yukon XL

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Feb 2018 • 4 Fuel-ups

  Property of chrisfree22

• 13.9 Avg MPG

• GMC

  2015 GMC Yukon XL SLE 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Apr 2016 • 53 Fuel-ups

  Property of terryvb

• 17.6 Avg MPG

• Z. Stacy's Yukon (old)

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added May 2017 • 51 Fuel-ups

  Property of wiegelsa

• 16.4 Avg MPG

• 2015 Denali XL (Yukon)

  2015 GMC Yukon XL Denali 6.2L V8 FLEX Automatic 8 Speed
  Added Sep 2016 • 41 Fuel-ups

  Property of mbelliveau

• 25.8 Avg MPG

• New Beast

  2015 GMC Yukon XL SLT 5.3L V8 FLEX Automatic 6 Speed Sport Utility
  Added Apr 2015 • 28 Fuel-ups

  Property of MTCJr

• 14.1 Avg MPG

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