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2018 GMC Sierra 1500 MPG

Based on data from 186 vehicles, 16,344 fuel-ups and 4,616,610 miles of driving, the 2018 GMC Sierra 1500 gets a combined Avg MPG of 15.97 with a 0.05 MPG margin of error.

Below you can see a distribution of the fuel-ups with 236 outliers (1.42%) removed.

Following shows the average MPG of each of the 186 vehicles in the system.

2018 GMC Sierra 1500s For Sale Nearby

  • 2018 Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 8 Speed Crew Cab Pickup
    Added Jan 2019 • 309 Fuel-ups

    Property of civicsiracer06

  • 14.4 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Nov 2018 • 124 Fuel-ups

    Property of emejay

  • 19.4 Avg MPG
  • Company Truck

    2018 GMC Sierra 1500 4.3L V6 FLEX Automatic 6 Speed Standard Cab Pickup
    Added Feb 2019 • 115 Fuel-ups

    Property of RhoadBlock

  • 15.5 Avg MPG
  • My New Toy

    2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed Crew Cab Pickup
    Added Jan 2019 • 82 Fuel-ups

    Property of widebody

  • 16.9 Avg MPG
  • 2018 GMC Sierra

    2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
    Added Mar 2018 • 180 Fuel-ups

    Property of Existant69

  • 13.9 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed
    Added May 2020 • 29 Fuel-ups

    Property of nkeller32

  • 18.1 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 4.3L V6 FLEX Automatic 6 Speed
    Added Jan 2020 • 101 Fuel-ups

    Property of GregEscobar

  • 19.1 Avg MPG
  • 18 GMC

    2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Oct 2021 • 50 Fuel-ups

    Property of oldguy123

  • 18.9 Avg MPG
  • Sierra All Terain

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jan 2020 • 88 Fuel-ups

    Property of 76cj

  • 19.1 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Dec 2020 • 73 Fuel-ups

    Property of ianspecs

  • 13.6 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jan 2021 • 21 Fuel-ups

    Property of maassen5995

  • 19.4 Avg MPG
  • 2018 Sierra Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Feb 2019 • 75 Fuel-ups

    Property of gfervin

  • 14.8 Avg MPG
  • Bluejay

    2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
    Added Jul 2021 • 107 Fuel-ups

    Property of Bigtrucker53

  • 18.5 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed
    Added Feb 2022 • 101 Fuel-ups

    Property of Ridley13

  • 14.5 Avg MPG
  • 2018 GMC Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Mar 2018 • 84 Fuel-ups

    Property of geeklife

  • 17.7 Avg MPG
  • 2018 Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
    Added Feb 2019 • 121 Fuel-ups

    Property of trentm

  • 15.5 Avg MPG
  • 2018 Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Nov 2018 • 75 Fuel-ups

    Property of Matt1552

  • 20.1 Avg MPG
  • 2018 Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jul 2018 • 148 Fuel-ups

    Property of mkirbitz

  • 16.7 Avg MPG
  • 5.3L Sierra 1500

    2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
    Added Jul 2021 • 16 Fuel-ups

    Property of Corelax

  • 15.5 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Oct 2019 • 215 Fuel-ups

    Property of hubbd33

  • 14.8 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

Tips

Drive to the engine & ECUs strengths

In a car with a small rev-happy engine it may be more fuel e... ...

by techathy

Read more tips