Based on data from 120 vehicles, 10,073 fuel-ups and 2,997,557 miles of driving, the 2011 GMC Sierra 1500 gets a combined Avg MPG of 15.32 with a 0.06 MPG margin of error.

Any Engine Type 4.3L V6 GAS (2) 4.8L V8 FLEX (12) 5.3L V8 FLEX (62) 6.2L V8 FLEX (15) GAS (1) V6 GAS (2) V8 FLEX (11) V8 GAS (7) Any Body Style Standard Cab Pickup (4) Extended Cab Pickup (12) Crew Cab Pickup (19) Cab & Chassis - Crew Cab (1) Any Submodel WT (5) SL (9) Denali (10) SLT (22) SLE (48) Other (26)

Below you can see a distribution of the fuel-ups with 818 outliers (7.51%) removed.

Following shows the average MPG of each of the 120 vehicles in the system.

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• Big Red

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added May 2017 • 296 Fuel-ups

  Property of litcatp

• 16.0 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Aug 2023 • 254 Fuel-ups

  Property of Hemphog

• 15.5 Avg MPG

• Yoti's SLT 1500 Z71

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Jul 2022 • 83 Fuel-ups

  Property of Yoti14

• 13.3 Avg MPG

• GMC Sierra 1500

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Oct 2018 • 225 Fuel-ups

  Property of seanansley3

• 17.5 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SL 5.3L V8 FLEX Automatic 6 Speed
  Added May 2017 • 622 Fuel-ups

  Property of Winkman

• 14.8 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SL 4.8L V8 FLEX Automatic 4 Speed
  Added Jan 2019 • 214 Fuel-ups

  Property of theduv

• 18.1 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 Denali 6.2L V8 FLEX Automatic 6 Speed Cab & Chassis - Crew Cab
  Added May 2023 • 40 Fuel-ups

  Property of Carringtondobbs

• 12.6 Avg MPG

• GMC Sierra 1500

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added May 2018 • 153 Fuel-ups

  Property of fastlsx

• 15.6 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 WT 4.3L V6 GAS Automatic 4 Speed
  Added Jul 2019 • 264 Fuel-ups

  Property of iublue

• 16.6 Avg MPG

• GMC PU

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jul 2018 • 275 Fuel-ups

  Property of wdckellogg

• 15.4 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX
  Added Oct 2017 • 342 Fuel-ups

  Property of tjarrard

• 17.8 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Apr 2021 • 77 Fuel-ups

  Property of koald58

• 13.3 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 Denali 6.2L V8 FLEX Automatic 6 Speed
  Added Feb 2020 • 41 Fuel-ups

  Property of jmendoza82

• 10.1 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2019 • 34 Fuel-ups

  Property of 2004

• 11.4 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 4 Speed
  Added Apr 2021 • 27 Fuel-ups

  Property of Rdtrkr

• 17.0 Avg MPG

• GMC Sierra 1500

  2011 GMC Sierra 1500 SL 4.8L V8 FLEX Automatic 4 Speed
  Added Aug 2020 • 59 Fuel-ups

  Property of Richard19

• 15.1 Avg MPG

• 2011 GMC

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Nov 2021 • 20 Fuel-ups

  Property of perroloco85

• 12.2 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Oct 2018 • 158 Fuel-ups

  Property of bwines06

• 13.2 Avg MPG

• 2011 Sierra

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Standard Cab Pickup
  Added Sep 2017 • 157 Fuel-ups

  Property of MightEMatt

• 13.7 Avg MPG

• 2011 GMC Sierra SLE

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2019 • 95 Fuel-ups

  Property of billweb143

• 10.3 Avg MPG

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