Based on data from 19 vehicles, 1,018 fuel-ups and 360,918 miles of driving, the 2011 GMC Sierra 3500 HD gets a combined Avg MPG of 13.09 with a 0.18 MPG margin of error.

Any Engine Type 6.6L V8 DIESEL (14) V8 DIESEL (4) Any Body Style Extended Cab Pickup (2) Crew Cab Pickup (7) Any Submodel WT (1) SLT (3) SLE (4) Denali (6) Other (5)

Below you can see a distribution of the fuel-ups with 79 outliers (7.20%) removed.

Following shows the average MPG of each of the 19 vehicles in the system.

• Denali

  2011 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Oct 2019 • 130 Fuel-ups

  Property of btexpress

• 13.4 Avg MPG

• My Sierra 3500 HD

  2011 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jul 2022 • 5 Fuel-ups

  Property of buds302

• 11.2 Avg MPG

• #26

  2011 GMC Sierra 3500 HD WT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Sep 2015 • 108 Fuel-ups

  Property of ydargnella

• 15.0 Avg MPG

• GMC

  2011 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Nov 2020 • 28 Fuel-ups

  Property of grumpy2409

• 11.5 Avg MPG

• Duramax

  2011 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added Sep 2017 • 35 Fuel-ups

  Property of TruckerBomb

• 15.2 Avg MPG

• My Sierra 3500 HD

  2011 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Apr 2020 • 69 Fuel-ups

  Property of kwbulls

• 16.0 Avg MPG

• Dually

  2011 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added Jan 2020 • 12 Fuel-ups

  Property of crazybeaver2005

• 15.7 Avg MPG

• Big dually

  2011 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2017 • 181 Fuel-ups

  Property of gonzoman

• 12.2 Avg MPG

• Sierra

  2011 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Feb 2016 • 80 Fuel-ups

  Property of pankster

• 14.8 Avg MPG

• Blaze Truck

  2011 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Oct 2017 • 14 Fuel-ups

  Property of durrettcustoms

• 12.8 Avg MPG

• Ol' Yella

  2011 GMC Sierra 3500 HD Unk
  Added Sep 2016 • 98 Fuel-ups

  Property of Entropical1

• 11.5 Avg MPG

• Matt's Duramax LML

  2011 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jul 2011 • 111 Fuel-ups

  Property of mhab12

• 14.3 Avg MPG

• Gmc-PU 1T

  2011 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2017 • 51 Fuel-ups

  Property of Straykat

• 15.8 Avg MPG

• 2011 Denali 3500

  2011 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 244 Fuel-ups

  Property of Kturner

• 14.6 Avg MPG

• SilverTongue

  2011 GMC Sierra 3500 HD DIESEL V8
  Added Aug 2013 • 3 Fuel-ups

  Property of n8dgr84

• 14.3 Avg MPG

• 2011 GMC 3500 HD

  2011 GMC Sierra 3500 HD DIESEL V8
  Added Dec 2012 • 21 Fuel-ups

  Property of boogiegix6

• 12.0 Avg MPG

• Denali-Lama

  2011 GMC Sierra 3500 HD DIESEL V8
  Added Jan 2012 • 13 Fuel-ups

  Property of magnetic1

• 13.9 Avg MPG

• DenaliLama

  2011 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2018 • 12 Fuel-ups

  Property of racerwong

• 21.5 Avg MPG

• Sierra 3500

  2011 GMC Sierra 3500 HD DIESEL V8
  Added Sep 2011 • 32 Fuel-ups

  Property of mbmcdermott18

• 15.3 Avg MPG