Click here to see important news regarding the aCar App

2020 GMC Sierra 1500 MPG

Based on data from 192 vehicles, 15,664 fuel-ups and 5,162,298 miles of driving, the 2020 GMC Sierra 1500 gets a combined Avg MPG of 18.21 with a 0.08 MPG margin of error.

Below you can see a distribution of the fuel-ups with 351 outliers (2.19%) removed.

Following shows the average MPG of each of the 192 vehicles in the system.

2020 GMC Sierra 1500s For Sale Nearby

  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Jan 2023 • 18 Fuel-ups

    Property of MotorBoater

  • 25.8 Avg MPG
  • 2020 Sierra

    2020 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Sep 2020 • 112 Fuel-ups

    Property of wvajeff

  • 15.8 Avg MPG
  • Big Gray

    2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 8 Speed
    Added Oct 2020 • 91 Fuel-ups

    Property of wirowek

  • 23.7 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
    Added Oct 2021 • 53 Fuel-ups

    Property of nightstick320

  • 19.7 Avg MPG
  • Denna

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2020 • 90 Fuel-ups

    Property of knightbsandy

  • 24.3 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
    Added Oct 2020 • 48 Fuel-ups

    Property of dphillippe

  • 20.1 Avg MPG
  • 2020 Sierra - Towing

    2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Aug 2020 • 31 Fuel-ups

    Property of Rexpelagi

  • 19.4 Avg MPG
  • 2020 GMC Sierra 1500 AT4

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added May 2020 • 94 Fuel-ups

    Property of blkcheech

  • 16.8 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Aug 2020 • 46 Fuel-ups

    Property of willyihts

  • 23.7 Avg MPG
  • Iron

    2020 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Apr 2020 • 68 Fuel-ups

    Property of andyh1

  • 23.8 Avg MPG
  • GMC Sierra

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Feb 2021 • 13 Fuel-ups

    Property of Larsan90

  • 24.8 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Sep 2020 • 54 Fuel-ups

    Property of shawsvale

  • 17.0 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Sep 2020 • 171 Fuel-ups

    Property of ImpRoma

  • 18.6 Avg MPG
  • Duramax 3.0 on 34’s

    2020 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2020 • 31 Fuel-ups

    Property of thechadwickk

  • 22.5 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Mar 2022 • 12 Fuel-ups

    Property of JMcCabe

  • 19.1 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Feb 2021 • 55 Fuel-ups

    Property of Nailer18

  • 22.4 Avg MPG
  • Sierra SLT

    2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
    Added Aug 2020 • 40 Fuel-ups

    Property of PtownVdub

  • 22.3 Avg MPG
  • 2020 GMC

    2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
    Added Feb 2020 • 70 Fuel-ups

    Property of garretn

  • 18.0 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Feb 2020 • 39 Fuel-ups

    Property of TheCrazyLudwig

  • 24.1 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
    Added Feb 2022 • 5 Fuel-ups

    Property of robbycruz52

  • 19.1 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

Tips

Decrease your weight, increase your MPG

Between 30 to 50 pounds of weight from your vehicle can net ... ...

by vwooks

Read more tips