Based on data from 71 vehicles, 5,357 fuel-ups and 1,288,483 miles of driving, the 2005 GMC Sierra 2500 HD gets a combined Avg MPG of 13.09 with a 0.09 MPG margin of error.

Any Engine Type 6.0L V8 CNG (4) 6.0L V8 GAS (15) 6.6L V8 DIESEL (42) GAS (1) V8 DIESEL (3) V8 GAS (2) Any Body Style Standard Cab Pickup (1) Extended Cab Pickup (4) Crew Cab Pickup (12) Any Submodel WT (1) Base (4) SLE (24) SLT (35) Other (7)

Below you can see a distribution of the fuel-ups with 96 outliers (1.76%) removed.

Following shows the average MPG of each of the 71 vehicles in the system.

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• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 CNG Automatic 4 Speed
  Added Feb 2022 • 64 Fuel-ups

  Property of bow58

• 10.8 Avg MPG

• 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 5 Speed Crew Cab Pickup
  Added Sep 2016 • 803 Fuel-ups

  Property of Davidsi21

• 11.1 Avg MPG

• GMC Pickup

  2005 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 5 Speed Crew Cab Pickup
  Added Sep 2011 • 234 Fuel-ups

  Property of jake2

• 12.5 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 CNG Automatic 4 Speed
  Added Nov 2019 • 305 Fuel-ups

  Property of 2005redlly

• 14.2 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Apr 2022 • 38 Fuel-ups

  Property of Noah99

• 13.7 Avg MPG

• 05 Sierra 2500hd

  2005 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jan 2023 • 15 Fuel-ups

  Property of Cooki_Monstre

• 8.7 Avg MPG

• GMC Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jan 2023 • 5 Fuel-ups

  Property of BVDZ

• 8.2 Avg MPG

• Max

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Aug 2020 • 17 Fuel-ups

  Property of WilderFatBoy

• 13.5 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed Crew Cab Pickup
  Added Jan 2023 • 4 Fuel-ups

  Property of azevedofam

• 14.5 Avg MPG

• 2005 GMC 2500HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Mar 2017 • 375 Fuel-ups

  Property of Shkbilly

• 14.5 Avg MPG

• Casey’s GMC 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added May 2022 • 16 Fuel-ups

  Property of Warmerdam

• 12.1 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Nov 2018 • 114 Fuel-ups

  Property of evanmoore

• 15.5 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Feb 2016 • 212 Fuel-ups

  Property of kdhanson

• 14.9 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added May 2022 • 4 Fuel-ups

  Property of mtondi93

• 12.3 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Aug 2022 • 3 Fuel-ups

  Property of skillier795

• 25.7 Avg MPG

• LLY

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Apr 2021 • 10 Fuel-ups

  Property of jwmontoya

• 16.9 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 5 Speed
  Added Feb 2022 • 6 Fuel-ups

  Property of chipandfish

• 9.3 Avg MPG

• '05 GMC

  2005 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Oct 2017 • 109 Fuel-ups

  Property of Kamotz

• 9.8 Avg MPG

• Gmc

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Jul 2017 • 70 Fuel-ups

  Property of bmctier

• 15.7 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Sep 2022 • 3 Fuel-ups

  Property of ctj71

• 14.7 Avg MPG

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