Based on data from 103 vehicles, 9,114 fuel-ups and 2,595,225 miles of driving, the 2013 GMC Sierra 1500 gets a combined Avg MPG of 14.56 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 (69) 6.0L V8 ELECTRIC/FLEX (1) 6.2L V8 FLEX (11) 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) WT (5) Denali (5) SL (9) SLT (25) SLE (50) Other (8)

Below you can see a distribution of the fuel-ups with 429 outliers (4.50%) removed.

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

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• 2013 Black GMC Sierra

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added May 2013 • 53 Fuel-ups

  Property of SouthDakotaLove

• 15.4 Avg MPG

• Truck

  2013 GMC Sierra 1500 SLT 6.2L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Mar 2013 • 102 Fuel-ups

  Property of musselman

• 16.3 Avg MPG

• My Sierra 1500

  2013 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Mar 2016 • 3 Fuel-ups

  Property of jwearhouse

• 12.6 Avg MPG

• GMC Sierra

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Jul 2014 • 91 Fuel-ups

  Property of bruceeash

• 17.1 Avg MPG

• Kodiak

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Dec 2015 • 4 Fuel-ups

  Property of Nembo

• 14.3 Avg MPG

• Sierra 1500

  2013 GMC Sierra 1500 SL 4.8L V8 FLEX Automatic 4 Speed
  Added Dec 2015 • 3 Fuel-ups

  Property of widowsson

• 13.6 Avg MPG

• White Cloud

  2013 GMC Sierra 1500 SL 4.8L V8 FLEX Automatic 4 Extended Cab Pickup (4 Door)
  Added Mar 2015 • 3 Fuel-ups

  Property of frogman88

• 16.0 Avg MPG

• 2012 GMC

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Apr 2017 • 43 Fuel-ups

  Property of kelmore99

• 12.1 Avg MPG

• My Sierra 1500

  2013 GMC Sierra 1500 SLE 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Mar 2015 • 22 Fuel-ups

  Property of sierra13

• 16.0 Avg MPG

• GMC Sierra

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
  Added Sep 2013 • 105 Fuel-ups

  Property of danielgoddard

• 15.1 Avg MPG

• the beast

  2013 GMC Sierra 1500 SLT 5.3L FLEX V8 Automatic 6 Crew Cab Pickup (4 Door)
  Added Mar 2015 • 6 Fuel-ups

  Property of elpetrolio15

• 15.8 Avg MPG

• Sierra 2013

  2013 GMC Sierra 1500 SLT 6.2L V8 FLEX Automatic 6 Speed
  Added Sep 2016 • 74 Fuel-ups

  Property of sanity

• 15.0 Avg MPG

• Sierra

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Crew Cab Pickup
  Added Oct 2017 • 23 Fuel-ups

  Property of mrmicrochip

• 18.1 Avg MPG

• Denali

  2013 GMC Sierra 1500 Denali 6.2L FLEX V8 Automatic 6
  Added Jun 2014 • 4 Fuel-ups

  Property of kkryz

• 13.8 Avg MPG

• Red GMC Truck

  2013 GMC Sierra 1500 FLEX V8
  Added Feb 2014 • 18 Fuel-ups

  Property of rdanse

• 10.3 Avg MPG

• Sierra - Towing

  2013 GMC Sierra 1500 GAS V8
  Added Apr 2013 • 18 Fuel-ups

  Property of jabrake88

• 13.7 Avg MPG

• GMC

  2013 GMC Sierra 1500 GAS V8
  Added Dec 2013 • 4 Fuel-ups

  Property of GMCRobb

• 11.7 Avg MPG

• My Blue Truck

  2013 GMC Sierra 1500 GAS V8
  Added Jan 2014 • 3 Fuel-ups

  Property of GTConley

• 11.9 Avg MPG

• Sierra

  2013 GMC Sierra 1500 GAS V8
  Added Dec 2012 • 68 Fuel-ups

  Property of jabrake88

• 18.1 Avg MPG

• My Truck

  2013 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Jan 2018 • 78 Fuel-ups

  Property of munterhitch

• 18.3 Avg MPG

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