Based on data from 95 vehicles, 10,400 fuel-ups and 2,609,193 miles of driving, the 2006 GMC Sierra 2500 HD gets a combined Avg MPG of 14.37 with a 0.06 MPG margin of error.

Any Engine Type 6.0L V8 GAS (15) 6.6L V8 DIESEL (72) V8 DIESEL (3) V8 GAS (3) Any Body Style Sport Utility (1) Extended Cab Pickup (4) Crew Cab Pickup (28) Any Submodel SL (5) WT (5) SLE (21) SLT (57) Other (7)

Below you can see a distribution of the fuel-ups with 146 outliers (1.38%) removed.

Following shows the average MPG of each of the 95 vehicles in the system.

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• 2006 Duramax

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2018 • 179 Fuel-ups

  Property of oskam6

• 14.7 Avg MPG

• Truck

  2006 GMC Sierra 2500 HD SL 6.6L V8 DIESEL Standard 6 Speed
  Added Mar 2018 • 133 Fuel-ups

  Property of Bacons2018

• 15.6 Avg MPG

• My Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2017 • 189 Fuel-ups

  Property of PrestonL

• 14.6 Avg MPG

• Gmc

  2006 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Dec 2020 • 27 Fuel-ups

  Property of brentah272

• 10.9 Avg MPG

• Quiv

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2017 • 198 Fuel-ups

  Property of JordanTr

• 16.1 Avg MPG

• Justin woods

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Dec 2017 • 283 Fuel-ups

  Property of 06lbz

• 14.8 Avg MPG

• My Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2017 • 108 Fuel-ups

  Property of reece650

• 12.4 Avg MPG

• 2006 Sierra 2500 HD

  2006 GMC Sierra 2500 HD SL 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2021 • 4 Fuel-ups

  Property of dillyboy

• 17.3 Avg MPG

• GMC Pickup

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 333 Fuel-ups

  Property of ernie6767

• 14.7 Avg MPG

• 2006 GMC Sierra 2500 SLE

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 369 Fuel-ups

  Property of 911never4get

• 12.7 Avg MPG

• Ryan's Truck

  2006 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 5 Speed
  Added Mar 2017 • 249 Fuel-ups

  Property of rfoster

• 11.0 Avg MPG

• My Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2021 • 46 Fuel-ups

  Property of dchiach

• 12.2 Avg MPG

• 2500HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Aug 2018 • 365 Fuel-ups

  Property of hummingbird63012

• 15.2 Avg MPG

• D-Max work truck

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added May 2018 • 255 Fuel-ups

  Property of sconlee03

• 13.6 Avg MPG

• My Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Feb 2017 • 215 Fuel-ups

  Property of HomerDMAX

• 15.9 Avg MPG

• 2006 GMC Sierra 2500HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jun 2018 • 447 Fuel-ups

  Property of tkemo648

• 16.6 Avg MPG

• GMC Sierra 2500HD

  2006 GMC Sierra 2500 HD SLE
  Added Mar 2018 • 153 Fuel-ups

  Property of lb7duramax24

• 17.0 Avg MPG

• DookieMax

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2017 • 214 Fuel-ups

  Property of Peen

• 16.7 Avg MPG

• GMC 2500HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2018 • 221 Fuel-ups

  Property of xds

• 14.0 Avg MPG

• GMC Sierra

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 328 Fuel-ups

  Property of jasezr2

• 13.8 Avg MPG

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