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2015 GMC Sierra 1500 MPG

Based on data from 207 vehicles, 20,265 fuel-ups and 5,931,555 miles of driving, the 2015 GMC Sierra 1500 gets a combined Avg MPG of 15.80 with a 0.05 MPG margin of error.

Below you can see a distribution of the fuel-ups with 615 outliers (2.95%) removed.

Following shows the average MPG of each of the 207 vehicles in the system.

2015 GMC Sierra 1500s For Sale Nearby

  • Team Blue (Truck)

    2015 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Jan 2022 • 62 Fuel-ups

    Property of TeamBlue

  • 16.3 Avg MPG
  • My Sierra 1500

    2015 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
    Added Feb 2022 • 32 Fuel-ups

    Property of amumcgann

  • 17.1 Avg MPG
  • My Sierra 1500

    2015 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Jun 2022 • 5 Fuel-ups

    Property of abby1127

  • 19.6 Avg MPG
  • Truck

    2015 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Oct 2018 • 176 Fuel-ups

    Property of kbreyette

  • 15.2 Avg MPG
  • My Sierra 1500

    2015 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 6 Speed
    Added Aug 2021 • 15 Fuel-ups

    Property of Colton1500

  • 13.7 Avg MPG
  • Joey's GMC

    2015 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
    Added Sep 2016 • 217 Fuel-ups

    Property of Shakora

  • 13.9 Avg MPG
  • Sierra

    2015 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
    Added Mar 2017 • 283 Fuel-ups

    Property of dgrule

  • 16.4 Avg MPG
  • My Sierra 1500

    2015 GMC Sierra 1500 SLE 4.3L V6 FLEX Automatic 6 Speed
    Added Nov 2019 • 69 Fuel-ups

    Property of Musang

  • 15.1 Avg MPG
  • Denali

    2015 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Mar 2017 • 197 Fuel-ups

    Property of giro

  • 15.6 Avg MPG
  • GMC Sierra 1500

    2015 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
    Added Aug 2017 • 193 Fuel-ups

    Property of eddykc03

  • 15.6 Avg MPG
  • GMC 1500 Crew

    2015 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Mar 2019 • 118 Fuel-ups

    Property of wingbase

  • 12.4 Avg MPG
  • Sierra

    2015 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Apr 2018 • 293 Fuel-ups

    Property of ssirik

  • 14.5 Avg MPG
  • Sierra 1500

    2015 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
    Added May 2020 • 116 Fuel-ups

    Property of jurbin

  • 16.1 Avg MPG
  • Silver Surfer

    2015 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Extended Cab Pickup
    Added Apr 2016 • 315 Fuel-ups

    Property of humenfly

  • 17.8 Avg MPG
  • GMC Truck

    2015 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added May 2020 • 74 Fuel-ups

    Property of Chuck16785

  • 17.2 Avg MPG
  • GMC Sierra Denali

    2015 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Aug 2016 • 315 Fuel-ups

    Property of mnetland

  • 18.6 Avg MPG
  • 2015 GMC Sierra 1500 SLT

    2015 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
    Added Dec 2018 • 243 Fuel-ups

    Property of mnvik28

  • 14.5 Avg MPG
  • Da Kon

    2015 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
    Added Sep 2021 • 45 Fuel-ups

    Property of Tclechner

  • 16.7 Avg MPG
  • GMC

    2015 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
    Added Jul 2021 • 328 Fuel-ups

    Property of jarrett85

  • 15.4 Avg MPG
  • 2015 GMC Sierra Crew Cab

    2015 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
    Added Oct 2016 • 240 Fuel-ups

    Property of dbowman711

  • 15.7 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

Tips

Steptronic transmissions - upshift to highest gear possible

At 35 mph, my automatic transmission is at 5th gear and 1800... ...

by cuts_off_prius

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