Based on data from 367 vehicles, 23,949 fuel-ups and 7,164,979 miles of driving, the 2014 GMC Sierra 1500 gets a combined Avg MPG of 15.62 with a 0.04 MPG margin of error.

Any Engine Type 4.3L V6 FLEX (26) 5.3L V8 FLEX (245) 6.2L V8 GAS (30) GAS (4) V6 GAS (6) V8 GAS (39) Any Body Style Standard Cab Pickup (3) Extended Cab Pickup (21) Crew Cab Pickup (60) Cab & Chassis - Crew Cab (2) Cab & Chassis - Extended Cab (1) Any Submodel Base (19) Denali (25) SLE (133) SLT (133) Other (57)

Below you can see a distribution of the fuel-ups with 497 outliers (2.03%) removed.

Following shows the average MPG of each of the 367 vehicles in the system.

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• rubby red

  2014 GMC Sierra 1500 GAS V8
  Added Jun 2014 • 3 Fuel-ups

  Property of blueskie

• 1.9 Avg MPG

• SR1

  2014 GMC Sierra 1500 GAS V8
  Added Jun 2014 • 11 Fuel-ups

  Property of davidbsjunkmail

• 19.5 Avg MPG

• Sierra

  2014 GMC Sierra 1500 SLT 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Apr 2014 • 1 Fuel-up

  Property of hardloaf

• 0.0 Avg MPG

• red truck

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

  Property of dr67dave

• 20.9 Avg MPG

• Dan's GMC

  2014 GMC Sierra 1500
  Added Mar 2014 • 3 Fuel-ups

  Property of dec355

• 17.7 Avg MPG

• 2014 Sierra All Terrain

  2014 GMC Sierra 1500 GAS V8
  Added Jan 2014 • 1 Fuel-up

  Property of strike1st

• 11.1 Avg MPG

• Sierra

  2014 GMC Sierra 1500 GAS V8
  Added Jan 2014 • 5 Fuel-ups

  Property of streetglide7

• 17.3 Avg MPG

• Nick's Sierra

  2014 GMC Sierra 1500 GAS V8
  Added Jan 2014 • 11 Fuel-ups

  Property of NStripling

• 15.5 Avg MPG

• Chuck wagon

  2014 GMC Sierra 1500 GAS V8
  Added Dec 2013 • 8 Fuel-ups

  Property of chuck2014

• 15.8 Avg MPG

• 6.2L GMC Sierra 4X4

  2014 GMC Sierra 1500 GAS V8
  Added Jan 2014 • 2 Fuel-ups

  Property of rfsttrnlow

• 11.6 Avg MPG

• Silver truck

  2014 GMC Sierra 1500 GAS V8
  Added Oct 2013 • 16 Fuel-ups

  Property of tayloren

• 17.8 Avg MPG

• 2014 Sierra

  2014 GMC Sierra 1500 GAS V8
  Added Jan 2014 • 1 Fuel-up

  Property of Vmaxtastic

• 4.2 Avg MPG

• White truck

  2014 GMC Sierra 1500 GAS V6
  Added Oct 2013 • 9 Fuel-ups

  Property of woody78

• 16.7 Avg MPG

• truck

  2014 GMC Sierra 1500 GAS V8
  Added Jan 2014 • 2 Fuel-ups

  Property of anonymous

• 14.8 Avg MPG

• 2014 GMC Sierra 1500

  2014 GMC Sierra 1500 GAS V8
  Added Dec 2013 • 2 Fuel-ups

  Property of bogeypro

• 16.6 Avg MPG

• 2014 Sierra 1500 All Terrain 4wd

  2014 GMC Sierra 1500 GAS V8
  Added Dec 2013 • 1 Fuel-up

  Property of OCwhiteboyOC

• 0.0 Avg MPG

• My Sierra

  2014 GMC Sierra 1500 GAS V8
  Added Nov 2013 • 6 Fuel-ups

  Property of mh454

• 16.7 Avg MPG

• 2014 Sierra SLE Z71

  2014 GMC Sierra 1500 GAS V8
  Added Sep 2013 • 8 Fuel-ups

  Property of jdcuster

• 14.8 Avg MPG

• 5.3V8 Dble Cab 4x4 w/ lvl kit

  2014 GMC Sierra 1500 GAS V8
  Added Sep 2013 • 10 Fuel-ups

  Property of SETexRam

• 16.5 Avg MPG

• 2011 GMC Sierra SLE 2wd

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Aug 2016 • 137 Fuel-ups

  Property of zorrosr

• 13.7 Avg MPG

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