2008 GMC Sierra MPG

Based on data from 12 vehicles, 1,366 fuel-ups and 354,095 miles of driving, the 2008 GMC Sierra gets a combined Avg MPG of 15.25 with a 0.16 MPG margin of error.

Below you can see a distribution of the fuel-ups with 35 outliers (2.50%) removed.

Following shows the average MPG of each of the 12 vehicles in the system.

• My Sierra

  2008 GMC Sierra 5.3L V8 GAS Automatic 4 Speed
  Added Jan 2023 • 3 Fuel-ups

  Property of jessb218

• 14.7 Avg MPG

• GMC

  2008 GMC Sierra 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added May 2019 • 177 Fuel-ups

  Property of Atackett2001

• 14.2 Avg MPG

• GMC

  2008 GMC Sierra Denali 6.2L V8 GAS Automatic 6 Speed
  Added Jan 2018 • 24 Fuel-ups

  Property of 73Catalina

• 12.7 Avg MPG

• Andre Banks

  2008 GMC Sierra 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 256 Fuel-ups

  Property of BanksBoy89

• 14.9 Avg MPG

• GMC CREWCAB

  2008 GMC Sierra 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2016 • 104 Fuel-ups

  Property of mrmyrddin

• 16.5 Avg MPG

• Truck

  2008 GMC Sierra 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 561 Fuel-ups

  Property of pete56

• 18.4 Avg MPG

• GMC

  2008 GMC Sierra SLE
  Added Jul 2017 • 18 Fuel-ups

  Property of flashgordon11

• 15.9 Avg MPG

• Sierra

  2008 GMC Sierra SLE
  Added Aug 2016 • 17 Fuel-ups

  Property of tx_monster

• 53.9 Avg MPG

• Long black truck

  2008 GMC Sierra 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Apr 2016 • 29 Fuel-ups

  Property of Turdle

• 17.3 Avg MPG

• Sierra

  2008 GMC Sierra 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jan 2018 • 31 Fuel-ups

  Property of ewunsch8044

• 15.0 Avg MPG

• 2008 GMC Sierra

  2008 GMC Sierra 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Mar 2021 • 47 Fuel-ups

  Property of srshearman

• 16.3 Avg MPG

• 08 GMC Diesel

  2008 GMC Sierra 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2016 • 220 Fuel-ups

  Property of rconst

• 14.5 Avg MPG