2021 GMC Sierra MPG

Based on data from 1 vehicles, 16 fuel-ups and 5,836 miles of driving, the 2021 GMC Sierra gets a combined Avg MPG of 18.61 with a 1.02 MPG margin of error.

Below you can see a distribution of the fuel-ups with 1 outliers (5.88%) removed.

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2021 GMC Sierra AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
Added Jul 2024 • 34 Fuel-ups

Property of joedogg
18.6 Avg MPG

Recent Activity

from other GMC Sierra vehicles (View All)

Lisa_Robert added 1 notes for their 2014 GMC Sierra. 13 hours ago
Jorica fueled-up their 2023 GMC Sierra. Last Tank: 25.8 MPG 14 hours ago
sander025 added 1 notes for their 2022 GMC Sierra. 1 day ago
SpecMiata23 fueled-up their 2022 GMC Sierra. Last Tank: 15.2 MPG 3 days ago
Ed753 fueled-up their 2022 GMC Sierra. Last Tank: 16.2 MPG 3 days ago
jhruska fueled-up their 2022 GMC Sierra. Last Tank: 13.0 MPG 3 days ago
RADGAS added 1 notes for their 2022 GMC Sierra. 4 days ago

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Clear the Clutter

I try to keep only the essentials in my car. Hauling extra weight means higher fuel costs.

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2021 GMC Sierra MPG

2021 GMC Sierras For Sale Nearby

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