Based on data from 237 vehicles, 20,797 fuel-ups and 6,267,099 miles of driving, the 2014 GMC Sierra 1500 gets a combined Avg MPG of 15.74 with a 0.05 MPG margin of error.

Any Engine Type 4.3L V6 FLEX (17) 5.3L V8 FLEX (157) 6.2L V8 GAS (22) GAS (2) V6 GAS (6) V8 GAS (25) Any Body Style Standard Cab Pickup (3) Extended Cab Pickup (14) Crew Cab Pickup (46) Cab & Chassis - Crew Cab (1) Any Submodel Base (12) Denali (16) SLE (85) SLT (87) Other (37)

Below you can see a distribution of the fuel-ups with 439 outliers (2.07%) removed.

Following shows the average MPG of each of the 237 vehicles in the system.

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• Truck

  2014 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed Crew Cab Pickup
  Added Aug 2018 • 878 Fuel-ups

  Property of shuckeba

• 11.2 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed
  Added Nov 2017 • 163 Fuel-ups

  Property of xlocdnguyen

• 14.2 Avg MPG

• GMC

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Cab & Chassis - Crew Cab
  Added Nov 2019 • 79 Fuel-ups

  Property of Bluecoma

• 17.0 Avg MPG

• Sierra 1500 6.2L

  2014 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed
  Added Sep 2020 • 60 Fuel-ups

  Property of srquill

• 15.5 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jan 2021 • 38 Fuel-ups

  Property of Buildmorediesels

• 17.1 Avg MPG

• 2014 Sierra

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2018 • 173 Fuel-ups

  Property of Muldo

• 15.0 Avg MPG

• 2014 GMC Sierra

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Apr 2019 • 111 Fuel-ups

  Property of hoffman720

• 13.8 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Sep 2018 • 132 Fuel-ups

  Property of Gott42

• 15.0 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added May 2019 • 90 Fuel-ups

  Property of SGwyn

• 14.9 Avg MPG

• Sierra

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Jun 2017 • 196 Fuel-ups

  Property of Charcoachevy

• 12.4 Avg MPG

• Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2017 • 253 Fuel-ups

  Property of gobluefrasier

• 16.3 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Nov 2018 • 117 Fuel-ups

  Property of Vrooom7979

• 14.4 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2020 • 337 Fuel-ups

  Property of capnmo

• 14.4 Avg MPG

• The Truck

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Oct 2018 • 146 Fuel-ups

  Property of coreyrink

• 17.4 Avg MPG

• Big truck

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Sep 2021 • 6 Fuel-ups

  Property of stevenmags

• 13.4 Avg MPG

• GMC sierra allterrain

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Feb 2018 • 201 Fuel-ups

  Property of jayner86

• 11.5 Avg MPG

• Larry's GMC Sierra Crew Cab

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Sep 2016 • 334 Fuel-ups

  Property of lundrider

• 15.8 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Oct 2021 • 6 Fuel-ups

  Property of gmmartin

• 16.1 Avg MPG

• GMC Sierra 2014

  2014 GMC Sierra 1500 4.3L V6 FLEX Automatic 6 Speed Standard Cab Pickup
  Added Sep 2018 • 159 Fuel-ups

  Property of prixxjohn21

• 15.2 Avg MPG

• George

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Jun 2020 • 289 Fuel-ups

  Property of GeorgeParker

• 20.0 Avg MPG

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