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1999 GMC Sierra 1500 MPG

Based on data from 50 vehicles, 2,461 fuel-ups and 641,769 miles of driving, the 1999 GMC Sierra 1500 gets a combined Avg MPG of 13.77 with a 0.13 MPG margin of error.

Below you can see a distribution of the fuel-ups with 34 outliers (1.36%) removed.

Following shows the average MPG of each of the 50 vehicles in the system.

1999 GMC Sierra 1500s For Sale Nearby

  • ‘99 Sierra

    1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
    Added Nov 2021 • 68 Fuel-ups

    Property of keith_284

  • 11.5 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
    Added Jul 2019 • 28 Fuel-ups

    Property of hoffajd

  • 16.2 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SL 4.3L V6 GAS Automatic 4 Speed
    Added Oct 2022 • 39 Fuel-ups

    Property of gnatsumder

  • 12.1 Avg MPG
  • 99 Sierra

    1999 GMC Sierra 1500 SL 4.3L V6 GAS Automatic 4 Speed Standard Cab Pickup
    Added Oct 2017 • 159 Fuel-ups

    Property of bhagedorn

  • 11.7 Avg MPG
  • Sierra

    1999 GMC Sierra 1500 SL 4.3L V6 GAS Automatic 4 Standard Cab Pickup (2 Door)
    Added Aug 2015 • 25 Fuel-ups

    Property of katjlr

  • 18.5 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
    Added Feb 2018 • 154 Fuel-ups

    Property of clintmccoy

  • 15.6 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
    Added Jul 2022 • 11 Fuel-ups

    Property of connor7mvl

  • 14.6 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SLE 4.8L V8 GAS Manual 5 Speed
    Added Aug 2023 • 5 Fuel-ups

    Property of cohenkoch1

  • 15.5 Avg MPG
  • Walter Beard

    1999 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Extended Cab Pickup
    Added Apr 2018 • 40 Fuel-ups

    Property of roguemale

  • 13.9 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SL 4.3L V6 GAS Manual 5 Speed
    Added Jan 2022 • 85 Fuel-ups

    Property of Bridewell1

  • 11.4 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SL 5.3L V8 GAS Automatic 4 Speed
    Added Feb 2023 • 7 Fuel-ups

    Property of MavJ

  • 14.3 Avg MPG
  • Grey

    1999 GMC Sierra 1500 SLE 4.8L V8 GAS Manual 5 Speed Standard Cab Pickup
    Added Dec 2022 • 6 Fuel-ups

    Property of Tommychu

  • 11.3 Avg MPG
  • 99 Shortbed

    1999 GMC Sierra 1500 SLE 4.3L V6 GAS Automatic 4 Speed Standard Cab Pickup
    Added Sep 2022 • 3 Fuel-ups

    Property of IFIXEM2

  • 16.0 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
    Added Aug 2022 • 3 Fuel-ups

    Property of djlamm

  • 13.3 Avg MPG
  • Plow Truck

    1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed Standard Cab Pickup
    Added Jul 2020 • 10 Fuel-ups

    Property of drconnelly85

  • 12.8 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
    Added Apr 2022 • 10 Fuel-ups

    Property of aretz94

  • 15.0 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
    Added Nov 2021 • 10 Fuel-ups

    Property of joebro28

  • 14.8 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
    Added Feb 2020 • 58 Fuel-ups

    Property of ChadButtke

  • 13.3 Avg MPG
  • Truck

    1999 GMC Sierra 1500 SLE 5.3L V8 GAS Extended Cab Pickup
    Added Jan 2020 • 35 Fuel-ups

    Property of EY44

  • 15.9 Avg MPG
  • My Sierra 1500

    1999 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
    Added May 2019 • 7 Fuel-ups

    Property of 405g

  • 14.8 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

Tips

Cruise Control not always better

On flat or constant grades, the cruise works best for MPG. ... ...

by soutthpaw

Read more tips