2008 GMC Sierra 3500 HD MPG

Based on data from 10 vehicles, 837 fuel-ups and 244,886 miles of driving, the 2008 GMC Sierra 3500 HD gets a combined Avg MPG of 13.41 with a 0.20 MPG margin of error.

Below you can see a distribution of the fuel-ups with 64 outliers (7.10%) removed.

Following shows the average MPG of each of the 10 vehicles in the system.

• GMC

  2008 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Feb 2018 • 181 Fuel-ups

  Property of Potent68

• 14.1 Avg MPG

• Audrey

  2008 GMC Sierra 3500 HD WT 6.6L V8 DIESEL Automatic 6 Speed
  Added Apr 2022 • 43 Fuel-ups

  Property of mulejaw

• 15.2 Avg MPG

• Sierra

  2008 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Sep 2022 • 8 Fuel-ups

  Property of garywatzn

• 16.4 Avg MPG

• My Sierra 3500 HD

  2008 GMC Sierra 3500 HD WT 6.0L V8 GAS Automatic 6 Speed
  Added Mar 2022 • 4 Fuel-ups

  Property of longshlongtdog

• 8.9 Avg MPG

• My Sierra 3500 HD

  2008 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2018 • 17 Fuel-ups

  Property of ToasterBox

• 11.4 Avg MPG

• Work truck

  2008 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added May 2017 • 321 Fuel-ups

  Property of goater

• 14.1 Avg MPG

• truck 11

  2008 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added Dec 2015 • 193 Fuel-ups

  Property of towjoe75

• 11.6 Avg MPG

• 2008 GMC 3500 HD

  2008 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2017 • 92 Fuel-ups

  Property of bmlhomes

• 23.2 Avg MPG

• Big Red

  2008 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 168 Fuel-ups

  Property of llljrmd

• 17.0 Avg MPG

• Dually

  2008 GMC Sierra 3500 HD DIESEL V8
  Added Dec 2013 • 51 Fuel-ups

  Property of Brianslmm

• 15.0 Avg MPG