2021 GMC Sierra MPG

Based on data from 1 vehicles, 23 fuel-ups and 7,976 miles of driving, the 2021 GMC Sierra gets a combined Avg MPG of 18.28 with a 0.81 MPG margin of error.

Below you can see a distribution of the fuel-ups with 1 outliers (4.17%) removed.

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2021 GMC Sierra AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Jul 2024 • 44 Fuel-ups

Property of joedogg
18.2 Avg MPG

Recent Activity

from other GMC Sierra vehicles (View All)

mulhern00 added 1 notes for their 2014 GMC Sierra. 9 hours ago
jonestw added 1 notes for their 2014 GMC Sierra. 13 hours ago
RobBryce fueled-up their 2022 GMC Sierra. Last Tank: 12.0 MPG 1 day ago
swood2940 added 1 notes for their 2022 GMC Sierra. 1 day ago
TDI13 fueled-up their 2022 GMC Sierra. Last Tank: 21.9 MPG 2 days ago
sander025 added 1 notes for their 2022 GMC Sierra. 2 days ago
swood2940 added 1 notes for their 2022 GMC Sierra. 3 days ago

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Add air to tires during low humidity weather

The more water vapor in your tires, the more variation there... ...

by EngrPaul

2021 GMC Sierra MPG

2021 GMC Sierras For Sale Nearby

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