Based on data from 113 vehicles, 9,149 fuel-ups and 2,745,632 miles of driving, the 2011 GMC Sierra 1500 gets a combined Avg MPG of 15.40 with a 0.06 MPG margin of error.

Any Engine Type 4.3L V6 GAS (2) 4.8L V8 FLEX (11) 5.3L V8 FLEX (57) 6.2L V8 FLEX (14) GAS (1) V6 GAS (2) V8 FLEX (11) V8 GAS (7) Any Body Style Standard Cab Pickup (3) Extended Cab Pickup (10) Crew Cab Pickup (18) Any Submodel WT (5) SL (9) Denali (9) SLT (18) SLE (46) Other (26)

Below you can see a distribution of the fuel-ups with 790 outliers (7.95%) removed.

Following shows the average MPG of each of the 113 vehicles in the system.

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• Sierra

  2011 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Nov 2012 • 87 Fuel-ups

  Property of Redbelly

• 16.5 Avg MPG

• l's truck

  2011 GMC Sierra 1500 SL 4.8L FLEX V8 Automatic 4 Crew Cab Pickup (4 Door)
  Added Oct 2014 • 12 Fuel-ups

  Property of mountain

• 17.0 Avg MPG

• Mr. Truck

  2011 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Nov 2014 • 5 Fuel-ups

  Property of Luodo

• 13.7 Avg MPG

• 11 GMC Sierra

  2011 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Oct 2014 • 58 Fuel-ups

  Property of srboyum

• 15.2 Avg MPG

• Sabrina

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Dec 2011 • 73 Fuel-ups

  Property of CRTurboGuy

• 15.4 Avg MPG

• Gmc

  2011 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Extended Cab Pickup (4 Door)
  Added Sep 2014 • 4 Fuel-ups

  Property of ioperkins

• 13.8 Avg MPG

• Doug

  2011 GMC Sierra 1500 FLEX V8
  Added Dec 2011 • 121 Fuel-ups

  Property of Odd

• 16.5 Avg MPG

• truck

  2011 GMC Sierra 1500 SLE 5.3L FLEX V8 5328cc Automatic 6
  Added Jun 2014 • 8 Fuel-ups

  Property of Ginganinga

• 17.2 Avg MPG

• Company truck

  2011 GMC Sierra 1500 FLEX V8
  Added Jun 2014 • 13 Fuel-ups

  Property of jlturner

• 17.1 Avg MPG

• GMC Sierra 4x4

  2011 GMC Sierra 1500 FLEX V8
  Added Jan 2014 • 15 Fuel-ups

  Property of P1delboy

• 16.2 Avg MPG

• GMC Denali

  2011 GMC Sierra 1500 GAS V8
  Added May 2014 • 10 Fuel-ups

  Property of bigbud500

• 15.7 Avg MPG

• Sierra SLT

  2011 GMC Sierra 1500 GAS V8
  Added Apr 2011 • 91 Fuel-ups

  Property of Path07

• 14.7 Avg MPG

• GMC

  2011 GMC Sierra 1500 FLEX V8
  Added Aug 2013 • 34 Fuel-ups

  Property of Murph22083

• 12.0 Avg MPG

• dont use

  2011 GMC Sierra 1500
  Added Jan 2020 • 127 Fuel-ups

  Property of paultbear

• 69.1 Avg MPG

• Sierra

  2011 GMC Sierra 1500 GAS V8
  Added Feb 2014 • 127 Fuel-ups

  Property of paultercier

• 18.3 Avg MPG

• dont use

  2011 GMC Sierra 1500
  Added Jan 2020 • 127 Fuel-ups

  Property of paultbear

• 69.1 Avg MPG

• Sierra

  2011 GMC Sierra 1500
  Added Oct 2018 • 127 Fuel-ups

  Property of paultercier

• 69.1 Avg MPG

• My Sierra

  2011 GMC Sierra 1500 FLEX V8
  Added Nov 2013 • 10 Fuel-ups

  Property of atsmall127

• 15.8 Avg MPG

• Betty

  2011 GMC Sierra 1500
  Added Sep 2013 • 9 Fuel-ups

  Property of wdukes12

• 14.6 Avg MPG

• 2012 GMC Sierra

  2011 GMC Sierra 1500 GAS V8
  Added Oct 2013 • 6 Fuel-ups

  Property of unclebutch41

• 16.9 Avg MPG

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