Based on data from 120 vehicles, 9,932 fuel-ups and 2,957,965 miles of driving, the 2011 GMC Sierra 1500 gets a combined Avg MPG of 15.33 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 817 outliers (7.60%) removed.

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

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• My Sierra 1500

  2011 GMC Sierra 1500 Denali 6.2L V8 FLEX Automatic 6 Speed Cab & Chassis - Crew Cab
  Added May 2023 • 25 Fuel-ups

  Property of Carringtondobbs

• 13.2 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 • 64 Fuel-ups

  Property of Yoti14

• 13.1 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 WT 4.3L V6 GAS Automatic 4 Speed
  Added Jul 2019 • 254 Fuel-ups

  Property of iublue

• 16.6 Avg MPG

• Silver Beast

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Sep 2023 • 8 Fuel-ups

  Property of Dr_Drumm

• 17.9 Avg MPG

• GMC Sierra 1500

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Oct 2018 • 213 Fuel-ups

  Property of seanansley3

• 17.5 Avg MPG

• 2011 Sierra

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Standard Cab Pickup
  Added Sep 2017 • 155 Fuel-ups

  Property of MightEMatt

• 13.7 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 4 Speed
  Added Apr 2021 • 26 Fuel-ups

  Property of Rdtrkr

• 17.1 Avg MPG

• GMC Sierra 1500

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added May 2018 • 137 Fuel-ups

  Property of fastlsx

• 16.4 Avg MPG

• 2011 GMC Sierra SLE

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2019 • 93 Fuel-ups

  Property of billweb143

• 10.3 Avg MPG

• Big Red

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added May 2017 • 290 Fuel-ups

  Property of litcatp

• 16.0 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SL 4.8L V8 FLEX Automatic 4 Speed
  Added Jan 2019 • 205 Fuel-ups

  Property of theduv

• 18.0 Avg MPG

• GMC PU

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jul 2018 • 267 Fuel-ups

  Property of wdckellogg

• 15.4 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 Denali 6.2L V8 FLEX Automatic 6 Speed
  Added Feb 2020 • 39 Fuel-ups

  Property of jmendoza82

• 10.1 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Apr 2021 • 72 Fuel-ups

  Property of koald58

• 13.2 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SL 5.3L V8 FLEX Automatic 6 Speed
  Added May 2017 • 609 Fuel-ups

  Property of Winkman

• 14.8 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX
  Added Oct 2017 • 330 Fuel-ups

  Property of tjarrard

• 17.7 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Aug 2023 • 246 Fuel-ups

  Property of Hemphog

• 15.5 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Aug 2021 • 89 Fuel-ups

  Property of lwick7

• 15.5 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Nov 2022 • 24 Fuel-ups

  Property of krog33

• 13.5 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SL 4.8L V8 FLEX Automatic 4 Speed
  Added Feb 2022 • 6 Fuel-ups

  Property of darshanmckay95

• 12.9 Avg MPG

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