Based on data from 123 vehicles, 10,580 fuel-ups and 3,136,669 miles of driving, the 2011 GMC Sierra 1500 gets a combined Avg MPG of 15.27 with a 0.06 MPG margin of error.

Any Engine Type 4.3L V6 GAS (2) 4.8L V8 FLEX (13) 5.3L V8 FLEX (64) 6.2L V8 FLEX (16) GAS (1) V6 GAS (2) V8 FLEX (11) V8 GAS (7) Any Body Style Standard Cab Pickup (4) Extended Cab Pickup (13) Crew Cab Pickup (19) Cab & Chassis - Crew Cab (1) Any Submodel WT (5) SL (9) Denali (10) SLT (22) SLE (52) Other (25)

Below you can see a distribution of the fuel-ups with 827 outliers (7.25%) removed.

Following shows the average MPG of each of the 123 vehicles in the system.

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• GMC Sierra 5.3 Liter Z-71 4x4

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 4 Speed
  Added Sep 2016 • 247 Fuel-ups

  Property of Bulldog1985

• 18.5 Avg MPG

• Gaviota

  2011 GMC Sierra 1500 GAS V6
  Added Feb 2014 • 42 Fuel-ups

  Property of jalcerna

• 14.6 Avg MPG

• Chevy/GMC4

  2011 GMC Sierra 1500 Denali 6.2L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Jan 2016 • 16 Fuel-ups

  Property of Abmd

• 16.7 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Mar 2016 • 4 Fuel-ups

  Property of rojenlan

• 12.8 Avg MPG

• My Sierra 1500

  2011 GMC Sierra 1500 SLT 6.2L V8 FLEX Automatic 6 Crew Cab Pickup (4 Door)
  Added Jul 2015 • 10 Fuel-ups

  Property of Mstgkillr

• 14.6 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Feb 2015 • 107 Fuel-ups

  Property of civicsiracer06

• 14.8 Avg MPG

• Blue River

  2011 GMC Sierra 1500 SLE
  Added Mar 2014 • 53 Fuel-ups

  Property of urallclearkid

• 13.3 Avg MPG

• 2011 GMC Truck

  2011 GMC Sierra 1500 SLT 6.2L V8 FLEX Automatic 6 Speed
  Added Mar 2017 • 195 Fuel-ups

  Property of Gonzo928

• 14.5 Avg MPG

• Sierra

  2011 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Oct 2013 • 9 Fuel-ups

  Property of paultbear

• 19.3 Avg MPG

• Black

  2011 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Mar 2017 • 93 Fuel-ups

  Property of Dukesask

• 15.0 Avg MPG

• gmc 1500

  2011 GMC Sierra 1500 SLT 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Jun 2015 • 5 Fuel-ups

  Property of steve-o3518

• 15.3 Avg MPG

• 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

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