Based on data from 23 vehicles, 3,891 fuel-ups and 1,120,734 miles of driving, the 2014 GMC Sierra gets a combined Avg MPG of 15.96 with a 0.11 MPG margin of error.

Any Engine Type 5.3L V8 GAS (21) 6.2L V8 GAS (1) Any Body Style Standard Cab Pickup (1) Any Submodel Denali (1) All Terrain (2) SLE (8) SLT (11) Other (1)

Below you can see a distribution of the fuel-ups with 99 outliers (2.48%) removed.

Following shows the average MPG of each of the 23 vehicles in the system.

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• My Sierra

  2014 GMC Sierra SLT 5.3L V8 GAS Automatic 6 Speed
  Added Jun 2018 • 196 Fuel-ups

  Property of miltyme

• 16.1 Avg MPG

• Sierra

  2014 GMC Sierra SLT 5.3L V8 GAS Automatic 6 Speed
  Added Oct 2016 • 413 Fuel-ups

  Property of jonestw

• 11.6 Avg MPG

• Black Beast

  2014 GMC Sierra SLT 5.3L V8 GAS Automatic 6 Speed
  Added Mar 2017 • 279 Fuel-ups

  Property of traviswatson

• 15.2 Avg MPG

• Roy's Truck

  2014 GMC Sierra SLT 5.3L V8 GAS Automatic 6 Speed
  Added Jun 2018 • 478 Fuel-ups

  Property of RFanning

• 18.4 Avg MPG

• Terrain

  2014 GMC Sierra Denali 6.2L V8 GAS Automatic 6 Speed
  Added Jan 2018 • 162 Fuel-ups

  Property of Lisa_Robert

• 22.0 Avg MPG

• GMC

  2014 GMC Sierra
  Added Aug 2016 • 107 Fuel-ups

  Property of mulhern00

• 14.8 Avg MPG

• GMC Sierra

  2014 GMC Sierra SLT 5.3L V8 GAS Automatic 6 Speed
  Added Sep 2016 • 390 Fuel-ups

  Property of tanker57

• 15.1 Avg MPG

• Sierra

  2014 GMC Sierra SLE 5.3L V8 GAS Automatic 6 Speed
  Added Jan 2023 • 157 Fuel-ups

  Property of aaronkylekrueger

• 18.4 Avg MPG

• Sierra

  2014 GMC Sierra All Terrain 5.3L V8 GAS Automatic 6 Speed Standard Cab Pickup
  Added Aug 2019 • 53 Fuel-ups

  Property of vipersj

• 15.7 Avg MPG

• Paul

  2014 GMC Sierra SLE 5.3L V8 GAS Automatic 6 Speed
  Added Feb 2018 • 370 Fuel-ups

  Property of paawwlwall

• 10.8 Avg MPG

• My Sierra

  2014 GMC Sierra SLT 5.3L V8 GAS Automatic 6 Speed
  Added Oct 2019 • 14 Fuel-ups

  Property of Jfcnet

• 18.5 Avg MPG

• My Sierra

  2014 GMC Sierra SLE 5.3L V8 GAS Automatic 6 Speed
  Added Sep 2018 • 67 Fuel-ups

  Property of StBandal

• 14.9 Avg MPG

• 2014 Sierra

  2014 GMC Sierra SLT 5.3L V8 GAS Automatic 6 Speed
  Added Sep 2016 • 162 Fuel-ups

  Property of blakeslee

• 17.0 Avg MPG

• GMC 1500

  2014 GMC Sierra SLE 5.3L V8 GAS Automatic 6 Speed
  Added Mar 2017 • 269 Fuel-ups

  Property of 3garretts

• 17.6 Avg MPG

• Delilah

  2014 GMC Sierra SLE 5.3L V8 GAS Automatic 6 Speed
  Added Mar 2018 • 144 Fuel-ups

  Property of ajkenady

• 18.8 Avg MPG

• TRUCK

  2014 GMC Sierra SLT 5.3L V8 GAS Automatic 6 Speed
  Added Sep 2016 • 146 Fuel-ups

  Property of ryfletch

• 16.8 Avg MPG

• Great White

  2014 GMC Sierra All Terrain 5.3L V8 GAS Automatic 6 Speed
  Added Sep 2017 • 103 Fuel-ups

  Property of jamesb83

• 15.4 Avg MPG

• 2014 GMC Sierra

  2014 GMC Sierra SLT 5.3L V8 GAS Automatic 6 Speed
  Added Jan 2018 • 71 Fuel-ups

  Property of datahold

• 15.7 Avg MPG

• GMC Sierra Silver

  2014 GMC Sierra SLE 5.3L V8 GAS Automatic 6 Speed
  Added Nov 2016 • 319 Fuel-ups

  Property of rickwhaas

• 17.2 Avg MPG

• 2014Sierra

  2014 GMC Sierra SLE 5.3L V8 GAS Automatic 6 Speed
  Added Dec 2016 • 21 Fuel-ups

  Property of robert80

• 16.7 Avg MPG

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