Based on data from 117 vehicles, 13,560 fuel-ups and 3,382,715 miles of driving, the 2006 GMC Sierra 2500 HD gets a combined Avg MPG of 14.25 with a 0.05 MPG margin of error.

Any Engine Type 6.0L V8 GAS (21) 6.6L V8 DIESEL (87) 8.1L V8 GAS (1) V8 DIESEL (3) V8 GAS (3) Any Body Style Sport Utility (1) Extended Cab Pickup (5) Crew Cab Pickup (33) Any Submodel SL (6) WT (6) SLE (30) SLT (68) Other (7)

Below you can see a distribution of the fuel-ups with 471 outliers (3.36%) removed.

Following shows the average MPG of each of the 117 vehicles in the system.

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• 530i

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed Crew Cab Pickup
  Added Feb 2014 • 50 Fuel-ups

  Property of bbbmr

• 25.4 Avg MPG

• D2

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Oct 2016 • 7 Fuel-ups

  Property of bgod12

• 15.2 Avg MPG

• Truck

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 9 Speed Extended Cab Pickup
  Added Jan 2013 • 49 Fuel-ups

  Property of bbbmr

• 13.6 Avg MPG

• work truck

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Nov 2010 • 5 Fuel-ups

  Property of patster

• 15.6 Avg MPG

• Dirtymaxx

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Sep 2015 • 24 Fuel-ups

  Property of Android4499

• 14.9 Avg MPG

• Chris' Duramax

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2016 • 815 Fuel-ups

  Property of clgoble

• 14.1 Avg MPG

• GMC Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5
  Added Feb 2015 • 7 Fuel-ups

  Property of PrestonL13

• 17.0 Avg MPG

• GMC

  2006 GMC Sierra 2500 HD SLE 6L GAS V8 Automatic 4 Crew Cab Pickup (4 Door)
  Added Apr 2015 • 5 Fuel-ups

  Property of Centex

• 11.4 Avg MPG

• GMC 2500

  2006 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 5 Speed
  Added Aug 2017 • 12 Fuel-ups

  Property of murdoc2003

• 13.1 Avg MPG

• GMCHD4x4

  2006 GMC Sierra 2500 HD GAS V8
  Added Oct 2012 • 123 Fuel-ups

  Property of Hawk06

• 9.5 Avg MPG

• GMC Sierra 2500

  2006 GMC Sierra 2500 HD DIESEL V8
  Added Sep 2012 • 45 Fuel-ups

  Property of mtber4life661

• 15.3 Avg MPG

• dmax

  2006 GMC Sierra 2500 HD
  Added Aug 2013 • 4 Fuel-ups

  Property of devilblue14

• 15.8 Avg MPG

• jimmy C

  2006 GMC Sierra 2500 HD GAS V8
  Added Dec 2012 • 19 Fuel-ups

  Property of jimyj

• 13.9 Avg MPG

• Dannys Duramax

  2006 GMC Sierra 2500 HD DIESEL V8
  Added Jan 2013 • 3 Fuel-ups

  Property of DSTDI13

• 10.5 Avg MPG

• GMC 2500HD

  2006 GMC Sierra 2500 HD SLT 6.0L V8 GAS
  Added Jul 2018 • 42 Fuel-ups

  Property of bkothe

• 9.7 Avg MPG

• Tech 654 - 935 2TH

  2006 GMC Sierra 2500 HD GAS V8
  Added Dec 2011 • 4 Fuel-ups

  Property of JonNav

• 11.7 Avg MPG

• White Sierra DIESEL

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2018 • 19 Fuel-ups

  Property of dac51

• 13.5 Avg MPG

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