Based on data from 367 vehicles, 23,936 fuel-ups and 7,162,197 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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• Larry's GMC Sierra Crew Cab

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Sep 2016 • 455 Fuel-ups

  Property of lundrider

• 15.7 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2020 • 165 Fuel-ups

  Property of Don31980

• 14.3 Avg MPG

• My Denali

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Jan 2023 • 48 Fuel-ups

  Property of rwetzeler

• 12.7 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Feb 2021 • 217 Fuel-ups

  Property of Firebird455

• 16.8 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2018 • 311 Fuel-ups

  Property of jmb23802

• 16.1 Avg MPG

• Sierra 1500 6.2L

  2014 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed
  Added Sep 2020 • 151 Fuel-ups

  Property of srquill

• 15.2 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added May 2019 • 172 Fuel-ups

  Property of SGwyn

• 14.7 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 5.3L V8 FLEX Automatic 6 Speed
  Added Nov 2016 • 316 Fuel-ups

  Property of cbass25

• 13.4 Avg MPG

• Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jul 2018 • 184 Fuel-ups

  Property of SallySilverado

• 16.5 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2020 • 415 Fuel-ups

  Property of capnmo

• 14.3 Avg MPG

• Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Mar 2024 • 9 Fuel-ups

  Property of kejw

• 11.9 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Dec 2018 • 318 Fuel-ups

  Property of bnlitton

• 15.4 Avg MPG

• Sierra

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Apr 2017 • 310 Fuel-ups

  Property of wakerunner08

• 16.9 Avg MPG

• Sierra

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Apr 2024 • 2 Fuel-ups

  Property of breiler

• 16.2 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Sep 2018 • 242 Fuel-ups

  Property of Gott42

• 14.9 Avg MPG

• Giannina

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Mar 2020 • 148 Fuel-ups

  Property of Afterlife

• 13.7 Avg MPG

• Gmc Sierra

  2014 GMC Sierra 1500 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Sep 2018 • 330 Fuel-ups

  Property of blazer6596

• 16.5 Avg MPG

• 2014 GMC Sierra

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Apr 2019 • 190 Fuel-ups

  Property of hoffman720

• 13.8 Avg MPG

• Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Dec 2023 • 393 Fuel-ups

  Property of BMooyaso

• 18.9 Avg MPG

• My Sierra 1500 SLT

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Apr 2023 • 51 Fuel-ups

  Property of jamesg88

• 17.8 Avg MPG

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