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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• Gmc Sierra

  2014 GMC Sierra 1500 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Sep 2018 • 328 Fuel-ups

  Property of blazer6596

• 16.5 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2018 • 308 Fuel-ups

  Property of jmb23802

• 16.1 Avg MPG

• 2014 Sierra Denali

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Jul 2018 • 146 Fuel-ups

  Property of smokinu454

• 15.3 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Sep 2018 • 239 Fuel-ups

  Property of Gott42

• 14.9 Avg MPG

• Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Cab & Chassis - Crew Cab
  Added Oct 2022 • 83 Fuel-ups

  Property of COM-Mattawa

• 16.4 Avg MPG

• Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Dec 2023 • 391 Fuel-ups

  Property of BMooyaso

• 18.9 Avg MPG

• Truck

  2014 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed Crew Cab Pickup
  Added Aug 2018 • 1067 Fuel-ups

  Property of shuckeba

• 11.1 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Feb 2024 • 4 Fuel-ups

  Property of Bward7

• 13.1 Avg MPG

• 14 Sierra

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Apr 2018 • 321 Fuel-ups

  Property of Bassbuster88

• 15.0 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 5.3L V8 FLEX Automatic 6 Speed
  Added Nov 2016 • 312 Fuel-ups

  Property of cbass25

• 13.4 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Dec 2018 • 315 Fuel-ups

  Property of bnlitton

• 15.4 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Mar 2021 • 33 Fuel-ups

  Property of curwinagain

• 14.1 Avg MPG

• GMC Sierra

  2014 GMC Sierra 1500 SLE 4.3L V6 FLEX Automatic 6 Speed
  Added Oct 2019 • 213 Fuel-ups

  Property of JoynerFuel

• 16.3 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added May 2019 • 170 Fuel-ups

  Property of SGwyn

• 14.6 Avg MPG

• 2014 GMC Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Jan 2018 • 348 Fuel-ups

  Property of kwautosales

• 13.6 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2020 • 413 Fuel-ups

  Property of capnmo

• 14.3 Avg MPG

• 2014 GMC Sierra

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Apr 2019 • 188 Fuel-ups

  Property of hoffman720

• 13.8 Avg MPG

• GMC Sierra

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Feb 2020 • 124 Fuel-ups

  Property of LWConrad

• 15.5 Avg MPG

• 2014 Sierra

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2022 • 69 Fuel-ups

  Property of bigjamz

• 13.8 Avg MPG

• Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jul 2018 • 181 Fuel-ups

  Property of SallySilverado

• 16.5 Avg MPG

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