Based on data from 57 vehicles, 4,190 fuel-ups and 1,305,809 miles of driving, the 2013 GMC Sierra 2500 HD gets a combined Avg MPG of 12.51 with a 0.11 MPG margin of error.

Any Engine Type 6.0L V8 CNG (3) 6.0L V8 FLEX (10) 6.0L V8 GAS (2) 6.6L V8 DIESEL (36) DIESEL (1) V8 DIESEL (3) V8 GAS (1) Any Body Style Standard Cab Pickup (1) Extended Cab Pickup (6) Crew Cab Pickup (11) Any Submodel WT (5) Denali (12) SLE (17) SLT (18) Other (5)

Below you can see a distribution of the fuel-ups with 83 outliers (1.94%) removed.

Following shows the average MPG of each of the 57 vehicles in the system.

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• State Vehicle

  2013 GMC Sierra 2500 HD WT 6.0L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Sep 2017 • 213 Fuel-ups

  Property of k28218

• 10.8 Avg MPG

• 2013 GMC

  2013 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jan 2018 • 19 Fuel-ups

  Property of Morts

• 18.5 Avg MPG

• My Sierra 2500 HD

  2013 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2018 • 195 Fuel-ups

  Property of TTRacecraft

• 13.1 Avg MPG

• My Sierra 2500 HD

  2013 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2018 • 82 Fuel-ups

  Property of LT1Burb

• 13.6 Avg MPG

• My Sierra 2500 HD

  2013 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed
  Added May 2021 • 19 Fuel-ups

  Property of Reeves89

• 12.9 Avg MPG

• 2500

  2013 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jul 2015 • 97 Fuel-ups

  Property of bkfd062

• 13.8 Avg MPG

• Farm

  2013 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jun 2021 • 4 Fuel-ups

  Property of miller2e05

• 14.8 Avg MPG

• 2013 GMC

  2013 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added May 2016 • 323 Fuel-ups

  Property of Cruiser60

• 11.9 Avg MPG

• My Sierra 2500 HD

  2013 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jul 2020 • 8 Fuel-ups

  Property of zelix

• 17.9 Avg MPG

• 2013 GMC

  2013 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Dec 2023 • 18 Fuel-ups

  Property of Morts

• 18.5 Avg MPG

• My Sierra 2500 HD

  2013 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2019 • 7 Fuel-ups

  Property of DouglasBaggett

• 16.6 Avg MPG

• My Sierra 2500 HD

  2013 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2019 • 7 Fuel-ups

  Property of davidtschmidt

• 16.4 Avg MPG

• GMC Denali

  2013 GMC Sierra 2500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
  Added Feb 2018 • 224 Fuel-ups

  Property of Hoserr

• 13.0 Avg MPG

• Unit 126

  2013 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added Dec 2018 • 81 Fuel-ups

  Property of 67catsass

• 12.3 Avg MPG

• 2013 Denali HD

  2013 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2013 • 185 Fuel-ups

  Property of flymv92

• 13.2 Avg MPG

• My Sierra 2500 HD

  2013 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2017 • 19 Fuel-ups

  Property of wade_a_second

• 16.8 Avg MPG

• Big Chief

  2013 GMC Sierra 2500 HD SLT Automatic 6 Speed
  Added Jan 2025 • 43 Fuel-ups

  Property of dohlej

• 11.6 Avg MPG

• My Sierra 2500 HD

  2013 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2018 • 4 Fuel-ups

  Property of Luethmers10

• 12.5 Avg MPG

• My Sierra 2500 HD

  2013 GMC Sierra 2500 HD WT 6.0L V8 CNG Automatic 6 Speed
  Added Aug 2018 • 3 Fuel-ups

  Property of johndeerboyjd

• 7.4 Avg MPG

• Maggie

  2013 GMC Sierra 2500 HD WT 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added Feb 2018 • 14 Fuel-ups

  Property of Shamrock54

• 13.0 Avg MPG

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