Based on data from 114 vehicles, 13,176 fuel-ups and 3,279,545 miles of driving, the 2006 GMC Sierra 2500 HD gets a combined Avg MPG of 14.27 with a 0.05 MPG margin of error.

Any Engine Type 6.0L V8 GAS (20) 6.6L V8 DIESEL (85) 8.1L V8 GAS (1) V8 DIESEL (3) V8 GAS (3) Any Body Style Sport Utility (1) Extended Cab Pickup (5) Crew Cab Pickup (31) Any Submodel WT (5) SL (6) SLE (29) SLT (67) Other (7)

Below you can see a distribution of the fuel-ups with 436 outliers (3.20%) removed.

Following shows the average MPG of each of the 114 vehicles in the system.

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• Brett's Truck

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2017 • 235 Fuel-ups

  Property of bgarner6581

• 14.8 Avg MPG

• Ryan's Truck

  2006 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 5 Speed
  Added Mar 2017 • 328 Fuel-ups

  Property of rfoster

• 10.9 Avg MPG

• GMC

  2006 GMC Sierra 2500 HD SL 6.0L V8 GAS Automatic 4 Speed
  Added Jun 2017 • 178 Fuel-ups

  Property of bumblebeefilms

• 11.0 Avg MPG

• DookieMax

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2017 • 267 Fuel-ups

  Property of Peen

• 16.7 Avg MPG

• Truck

  2006 GMC Sierra 2500 HD SL 6.6L V8 DIESEL Standard 6 Speed
  Added Mar 2018 • 180 Fuel-ups

  Property of Bacons2018

• 14.2 Avg MPG

• Truck

  2006 GMC Sierra 2500 HD WT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jul 2015 • 247 Fuel-ups

  Property of gaskippy

• 13.4 Avg MPG

• GMC 2500HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2018 • 263 Fuel-ups

  Property of xds

• 14.1 Avg MPG

• Quiv

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2017 • 253 Fuel-ups

  Property of JordanTr

• 16.0 Avg MPG

• 2006 GMC Sierra 2500 SLE

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 430 Fuel-ups

  Property of 911never4get

• 12.6 Avg MPG

• GMC 2500

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added Oct 2019 • 269 Fuel-ups

  Property of ProCycle

• 15.2 Avg MPG

• LBZ

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added May 2023 • 14 Fuel-ups

  Property of schra644

• 12.9 Avg MPG

• My Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2024 • 3 Fuel-ups

  Property of JuicyDrewcy

• 12.9 Avg MPG

• My Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Jul 2023 • 9 Fuel-ups

  Property of jkelleher22

• 13.8 Avg MPG

• GMC 2500

  2006 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Mar 2023 • 217 Fuel-ups

  Property of cogborn84

• 11.1 Avg MPG

• GMC Sierra

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 351 Fuel-ups

  Property of jasezr2

• 13.7 Avg MPG

• GMC Sierra 2500HD

  2006 GMC Sierra 2500 HD SLE
  Added Mar 2018 • 182 Fuel-ups

  Property of lb7duramax24

• 16.8 Avg MPG

• Betsy

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added May 2021 • 22 Fuel-ups

  Property of carpkid805

• 17.5 Avg MPG

• Big Red

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2019 • 63 Fuel-ups

  Property of RT334

• 14.6 Avg MPG

• LB Zed

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Feb 2019 • 42 Fuel-ups

  Property of Wdoc

• 15.0 Avg MPG

• My Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2023 • 8 Fuel-ups

  Property of Kdogg

• 16.1 Avg MPG

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