Based on data from 107 vehicles, 7,775 fuel-ups and 2,185,189 miles of driving, the 2006 GMC Sierra 1500 gets a combined Avg MPG of 14.96 with a 0.05 MPG margin of error.

Any Engine Type 4.3L V6 GAS (9) 4.8L V8 GAS (21) 5.3L V8 FLEX (8) 5.3L V8 GAS (50) 6.0L V8 GAS (8) V8 GAS (8) Any Body Style Standard Cab Pickup (3) Extended Cab Pickup (14) Crew Cab Pickup (10) Any Submodel Denali (7) WT (8) SL (17) SLT (27) SLE (38) Other (10)

Below you can see a distribution of the fuel-ups with 784 outliers (9.16%) removed.

Following shows the average MPG of each of the 107 vehicles in the system.

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• Carter's Truck

  2006 GMC Sierra 1500 SL 4.3L V6 GAS Automatic 4 Speed
  Added Apr 2017 • 886 Fuel-ups

  Property of Carterjr

• 12.9 Avg MPG

• My Sierra 1500

  2006 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Jan 2025 • 4 Fuel-ups

  Property of ajswartz

• 11.8 Avg MPG

• 2006 GMC Pickup

  2006 GMC Sierra 1500 SL 4.3L V6 GAS
  Added Nov 2023 • 58 Fuel-ups

  Property of funsize441

• 15.4 Avg MPG

• CODE BLUE T

  2006 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 4 Speed Crew Cab Pickup
  Added Jul 2011 • 221 Fuel-ups

  Property of CowboyX5D

• 15.0 Avg MPG

• My Sierra 1500

  2006 GMC Sierra 1500 Denali 6.0L V8 GAS Automatic 4 Speed
  Added Nov 2023 • 65 Fuel-ups

  Property of buddyackell

• 14.4 Avg MPG

• Eric's Truck

  2006 GMC Sierra 1500 SLE 4.8L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jan 2025 • 102 Fuel-ups

  Property of ECONLEY3

• 14.7 Avg MPG

• GMC

  2006 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 4 Speed Extended Cab Pickup
  Added Sep 2019 • 364 Fuel-ups

  Property of claybo1708

• 16.6 Avg MPG

• 2006 Sierra

  2006 GMC Sierra 1500 SL 4.8L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Dec 2024 • 115 Fuel-ups

  Property of iamryanash

• 15.3 Avg MPG

• Truck

  2006 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2020 • 212 Fuel-ups

  Property of klsmth

• 16.5 Avg MPG

• My Sierra 1500

  2006 GMC Sierra 1500 WT 5.3L V8 GAS Automatic 4 Speed
  Added Jan 2024 • 29 Fuel-ups

  Property of pibbkc

• 14.0 Avg MPG

• Sierra SLE

  2006 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Nov 2023 • 24 Fuel-ups

  Property of Mortimis

• 13.2 Avg MPG

• Gary'Pickup

  2006 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Apr 2018 • 236 Fuel-ups

  Property of GDarby

• 17.7 Avg MPG

• My Sierra 1500

  2006 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Dec 2024 • 3 Fuel-ups

  Property of backcountrymike

• 15.6 Avg MPG

• My Sierra 1500

  2006 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 4 Speed
  Added Feb 2024 • 51 Fuel-ups

  Property of ajswartz

• 14.6 Avg MPG

• GMC

  2006 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Apr 2018 • 172 Fuel-ups

  Property of kevind257

• 14.9 Avg MPG

• Trucky

  2006 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Aug 2016 • 358 Fuel-ups

  Property of starky98

• 15.3 Avg MPG

• My Sierra 1500

  2006 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 4 Speed
  Added Dec 2024 • 5 Fuel-ups

  Property of LMG8807

• 14.2 Avg MPG

• Sierra 1500

  2006 GMC Sierra 1500 WT 4.3L V6 GAS Automatic 4 Speed
  Added Jul 2022 • 21 Fuel-ups

  Property of LotaCars

• 15.2 Avg MPG

• GMC 1500

  2006 GMC Sierra 1500 WT 5.3L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Mar 2017 • 48 Fuel-ups

  Property of marklawrence

• 15.8 Avg MPG

• GMC Truck

  2006 GMC Sierra 1500 SL 4.3L V6 GAS Manual 5 Speed Standard Cab Pickup
  Added Jan 2025 • 29 Fuel-ups

  Property of Nordin

• 15.9 Avg MPG

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