Based on data from 239 vehicles, 22,066 fuel-ups and 6,608,753 miles of driving, the 2014 GMC Sierra 1500 gets a combined Avg MPG of 15.69 with a 0.04 MPG margin of error.

Any Engine Type 4.3L V6 FLEX (19) 5.3L V8 FLEX (158) 6.2L V8 GAS (22) GAS (2) V6 GAS (6) V8 GAS (24) Any Body Style Standard Cab Pickup (3) Extended Cab Pickup (14) Crew Cab Pickup (45) Cab & Chassis - Crew Cab (1) Any Submodel Base (13) Denali (16) SLT (86) SLE (88) Other (36)

Below you can see a distribution of the fuel-ups with 458 outliers (2.03%) removed.

Following shows the average MPG of each of the 239 vehicles in the system.

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• Giannina

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Mar 2020 • 81 Fuel-ups

  Property of Afterlife

• 14.2 Avg MPG

• 2014 - Sierra

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Sep 2018 • 126 Fuel-ups

  Property of CNCGUY

• 14.9 Avg MPG

• Sierra

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Jun 2017 • 219 Fuel-ups

  Property of Charcoachevy

• 12.3 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2020 • 367 Fuel-ups

  Property of capnmo

• 14.4 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed
  Added Nov 2017 • 198 Fuel-ups

  Property of xlocdnguyen

• 14.2 Avg MPG

• Truck

  2014 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed Crew Cab Pickup
  Added Aug 2018 • 933 Fuel-ups

  Property of shuckeba

• 11.0 Avg MPG

• Sierra

  2014 GMC Sierra 1500 SLE
  Added Sep 2018 • 420 Fuel-ups

  Property of nittany815

• 15.2 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Nov 2021 • 43 Fuel-ups

  Property of dkelly9

• 16.5 Avg MPG

• Furiosa

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Jul 2017 • 276 Fuel-ups

  Property of azninc13

• 15.7 Avg MPG

• GMC Sierra

  2014 GMC Sierra 1500 SLE 4.3L V6 FLEX Automatic 6 Speed
  Added Oct 2019 • 155 Fuel-ups

  Property of JoynerFuel

• 16.5 Avg MPG

• Gmc Sierra

  2014 GMC Sierra 1500 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Sep 2018 • 254 Fuel-ups

  Property of blazer6596

• 16.7 Avg MPG

• Denali

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added May 2021 • 12 Fuel-ups

  Property of Dushang

• 11.6 Avg MPG

• 2014 Sierra Denali

  2014 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 6 Speed
  Added Jul 2018 • 117 Fuel-ups

  Property of smokinu454

• 15.3 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2020 • 84 Fuel-ups

  Property of Don31980

• 14.8 Avg MPG

• 14 Sierra

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Apr 2018 • 228 Fuel-ups

  Property of Bassbuster88

• 14.8 Avg MPG

• Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jul 2018 • 135 Fuel-ups

  Property of SallySilverado

• 16.7 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Dec 2018 • 233 Fuel-ups

  Property of jmb23802

• 16.2 Avg MPG

• My Sierra 1500

  2014 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Feb 2021 • 156 Fuel-ups

  Property of Firebird455

• 16.8 Avg MPG

• 2014 Sierra

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2022 • 16 Fuel-ups

  Property of bigjamz

• 14.6 Avg MPG

• Sierra

  2014 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Jan 2020 • 163 Fuel-ups

  Property of mlsthmpsn

• 13.9 Avg MPG

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