Based on data from 249 vehicles, 23,836 fuel-ups and 7,133,160 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 (19) 5.3L V8 FLEX (164) 6.2L V8 GAS (26) GAS (2) V6 GAS (6) V8 GAS (24) Any Body Style Standard Cab Pickup (3) Extended Cab Pickup (16) Crew Cab Pickup (45) Cab & Chassis - Crew Cab (2) Any Submodel Base (14) Denali (19) SLE (90) SLT (90) Other (36)

Below you can see a distribution of the fuel-ups with 496 outliers (2.04%) removed.

Following shows the average MPG of each of the 249 vehicles in the system.

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• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Sep 2014 • 21 Fuel-ups

  Property of blazin20z

• 17.1 Avg MPG

• Chris' Sierra

  2014 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Dec 2014 • 8 Fuel-ups

  Property of jcfountain33

• 13.4 Avg MPG

• Truck

  2014 GMC Sierra 1500 GAS V8
  Added May 2014 • 37 Fuel-ups

  Property of cmwilson

• 19.7 Avg MPG

• Sierra 1500 All-Terrain

  2014 GMC Sierra 1500 SLT 6.2L GAS V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Dec 2014 • 6 Fuel-ups

  Property of R3DRAM

• 15.0 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Sep 2014 • 8 Fuel-ups

  Property of sundj15

• 16.2 Avg MPG

• den11don's 2014 sierra

  2014 GMC Sierra 1500 SLT 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Nov 2014 • 11 Fuel-ups

  Property of den11don

• 17.6 Avg MPG

• Perturabo

  2014 GMC Sierra 1500 GAS V6
  Added Apr 2014 • 35 Fuel-ups

  Property of loadstar81

• 17.5 Avg MPG

• BigBlack

  2014 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Sep 2014 • 23 Fuel-ups

  Property of jstapel

• 17.6 Avg MPG

• Sierra Leon

  2014 GMC Sierra 1500 SLE 4.3L FLEX V6 Automatic 6 Crew Cab Pickup (4 Door)
  Added Oct 2014 • 15 Fuel-ups

  Property of etmccaus

• 19.1 Avg MPG

• All Terrain

  2014 GMC Sierra 1500 GAS V8
  Added Oct 2013 • 31 Fuel-ups

  Property of deezee

• 13.3 Avg MPG

• truck

  2014 GMC Sierra 1500 SLT 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Jun 2014 • 47 Fuel-ups

  Property of mudeater

• 15.5 Avg MPG

• 14 Sierra

  2014 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Extended Cab Pickup (4 Door)
  Added Aug 2014 • 7 Fuel-ups

  Property of RetiredNavyWO

• 18.3 Avg MPG

• Redneck Pimp

  2014 GMC Sierra 1500 Denali 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Oct 2014 • 17 Fuel-ups

  Property of Nuvolari

• 16.6 Avg MPG

• Sierra

  2014 GMC Sierra 1500 GAS V8
  Added May 2014 • 25 Fuel-ups

  Property of gmjunky

• 15.4 Avg MPG

• 2014 Sierra

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

  Property of 2014Sierra

• 17.1 Avg MPG

• Truck

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

  Property of adboyd06

• 15.8 Avg MPG

• 2WD doublecab V6

  2014 GMC Sierra 1500
  Added Mar 2014 • 15 Fuel-ups

  Property of pickups

• 21.8 Avg MPG

• Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Aug 2014 • 22 Fuel-ups

  Property of jrewingAB

• 19.2 Avg MPG

• 2014 Sierra All Terrain 5.3

  2014 GMC Sierra 1500 GAS V8
  Added Dec 2013 • 71 Fuel-ups

  Property of Robbo426

• 18.1 Avg MPG

• My Sierra 1500

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

  Property of smorlock

• 18.6 Avg MPG

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