Based on data from 103 vehicles, 8,735 fuel-ups and 2,504,220 miles of driving, the 2013 GMC Sierra 1500 gets a combined Avg MPG of 14.60 with a 0.06 MPG margin of error.

Any Engine Type 4.3L V6 GAS (3) 4.8L V8 FLEX (9) 5.3L V8 FLEX (70) 6.0L V8 ELECTRIC/FLEX (1) 6.2L V8 FLEX (10) V8 FLEX (1) V8 GAS (6) Any Body Style Standard Cab Pickup (1) Extended Cab Pickup (11) Crew Cab Pickup (14) Any Submodel Hybrid (1) Denali (4) WT (5) SL (9) SLT (25) SLE (51) Other (8)

Below you can see a distribution of the fuel-ups with 417 outliers (4.56%) removed.

Following shows the average MPG of each of the 103 vehicles in the system.

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• Gertie

  2013 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Jun 2021 • 132 Fuel-ups

  Property of mjfassio

• 15.1 Avg MPG

• Sierra 1500, 2wd, 3.42 gear

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jul 2022 • 17 Fuel-ups

  Property of Paedpasmi

• 14.2 Avg MPG

• My Sierra 1500

  2013 GMC Sierra 1500 SLT 6.2L V8 FLEX Automatic 6 Speed
  Added Aug 2017 • 74 Fuel-ups

  Property of WyoCowboys

• 9.2 Avg MPG

• Kodiak 2023

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jan 2023 • 44 Fuel-ups

  Property of walkrobs92

• 10.3 Avg MPG

• GMC

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Nov 2023 • 6 Fuel-ups

  Property of rslawson

• 14.1 Avg MPG

• GMC

  2013 GMC Sierra 1500 SLE 6.2L V8 FLEX Automatic 6 Speed
  Added Mar 2017 • 230 Fuel-ups

  Property of Anhalt

• 14.9 Avg MPG

• Truck

  2013 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Jan 2019 • 405 Fuel-ups

  Property of twinrow11

• 13.5 Avg MPG

• Sierra

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Aug 2016 • 216 Fuel-ups

  Property of brad8598

• 15.6 Avg MPG

• GMC Sierra 1500

  2013 GMC Sierra 1500 SL 4.8L V8 FLEX
  Added Mar 2021 • 48 Fuel-ups

  Property of Tracelong

• 14.0 Avg MPG

• My Sierra 1500

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Sep 2021 • 151 Fuel-ups

  Property of minich11

• 14.3 Avg MPG

• GMC Sierra 1500 2013

  2013 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Jul 2014 • 83 Fuel-ups

  Property of MovieGMan

• 12.9 Avg MPG

• My Sierra 1500

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Nov 2018 • 261 Fuel-ups

  Property of erhollin

• 15.0 Avg MPG

• Kodiak 2022

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jan 2022 • 34 Fuel-ups

  Property of walkrobs92

• 11.9 Avg MPG

• My Sierra 1500

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Aug 2018 • 161 Fuel-ups

  Property of Umnak

• 13.7 Avg MPG

• Black Sierra

  2013 GMC Sierra 1500 Denali 6.2L V8 FLEX Automatic 6 Speed
  Added Mar 2016 • 426 Fuel-ups

  Property of emo3113

• 16.7 Avg MPG

• James

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added May 2018 • 131 Fuel-ups

  Property of gaser17

• 14.1 Avg MPG

• 518 Denali

  2013 GMC Sierra 1500 Denali 6.2L V8 FLEX Automatic 6 Speed
  Added May 2022 • 3 Fuel-ups

  Property of M8trix1469

• 11.8 Avg MPG

• Chuck

  2013 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Dec 2017 • 240 Fuel-ups

  Property of Brwrfan1

• 16.0 Avg MPG

• GMC

  2013 GMC Sierra 1500 SL 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Oct 2018 • 118 Fuel-ups

  Property of jimmichelle

• 15.0 Avg MPG

• My Sierra 1500

  2013 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Jan 2022 • 18 Fuel-ups

  Property of Keith105

• 8.1 Avg MPG

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