2020 GMC Sierra 2WD MPG and Fuel Economy

On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 2020 GMC Sierra 2WD.

The 2020 GMC Sierra 2WD has 8 model options: Automatic 6-spd 6-cyl, 4.3 L, Automatic 8-spd 8-cyl, 5.3 L, Automatic 8-spd 4-cyl, 2.7 L, Automatic 10-spd 6-cyl, 3.0 L, Automatic 6-spd 8-cyl, 5.3 L, Automatic 6-spd 8-cyl, 5.3 L, Automatic 8-spd 4-cyl, 2.7 L and Automatic 8-spd 8-cyl, 5.3 L.

The 2020 GMC Sierra 2WD Automatic 6-spd 6-cyl, 4.3 L runs on regular gasoline and is in the Standard Pickup Trucks 2WD car class.

The 2020 GMC Sierra 2WD Automatic 8-spd 8-cyl, 5.3 L runs on regular gasoline and is in the Standard Pickup Trucks 2WD car class.

The 2020 GMC Sierra 2WD Automatic 8-spd 4-cyl, 2.7 L runs on regular gasoline and is in the Standard Pickup Trucks 2WD car class.

The 2020 GMC Sierra 2WD Automatic 10-spd 6-cyl, 3.0 L runs on diesel and is in the Standard Pickup Trucks 2WD car class.

The 2020 GMC Sierra 2WD Automatic 6-spd 8-cyl, 5.3 L runs on regular gasoline and is in the Standard Pickup Trucks 2WD car class.

The 2020 GMC Sierra 2WD Automatic 6-spd 8-cyl, 5.3 L runs on regular gasoline and is in the Standard Pickup Trucks 2WD car class.

The 2020 GMC Sierra 2WD Automatic 8-spd 4-cyl, 2.7 L runs on regular gasoline and is in the Standard Pickup Trucks 2WD car class.

The 2020 GMC Sierra 2WD Automatic 8-spd 8-cyl, 5.3 L runs on regular gasoline and is in the Standard Pickup Trucks 2WD car class.

🛣 How Many Miles per Gallon (MPG) Does a 2020 GMC Sierra 2WD Get?

Across all models, the combined average MPG for the 2020 GMC Sierra 2WD is 20 miles per gallon.

The table below breaks down the MPG for each model option:

💵 What is the Average Yearly Fuel Cost for a 2020 GMC Sierra 2WD?

The average fuel costs for all models of the 2020 GMC Sierra 2WD is $3,356.

The average fuel costs have been estimated by government regulators based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.

Comparing a 2020 GMC Sierra 2WD to an average vehicle over 5 years, you will spend $5,281 more on fuel.

The table below shows the fuel costs and 5-year save/spend for each model option:

🛢 How Many Barrels of Petroleum Does a 2020 GMC Sierra 2WD Consume?

Across all models, the average number barrels of petroleum that the 2020 GMC Sierra 2WD will consume in one year is 16 barrels.

The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.

💨 How Many Grams of CO₂ Does a 2020 GMC Sierra 2WD Emit?

The 2020 GMC Sierra 2WD will emit an average of about 7,006,875 grams of CO₂ per year.

🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO₂ per year. This means that roughly 239 trees would be needed to offset emissions from the 2020 GMC Sierra 2WD.

Overview

The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 8 2020 GMC Sierra 2WD model options.

Automatic 6-spd 6-cyl, 4.3 L

The table below contains all of the details we have for the 2020 GMC Sierra 2WD Automatic 6-spd 6-cyl, 4.3 L:

Automatic 8-spd 8-cyl, 5.3 L

The table below contains all of the details we have for the 2020 GMC Sierra 2WD Automatic 8-spd 8-cyl, 5.3 L:

Automatic 8-spd 4-cyl, 2.7 L

The table below contains all of the details we have for the 2020 GMC Sierra 2WD Automatic 8-spd 4-cyl, 2.7 L:

Automatic 10-spd 6-cyl, 3.0 L

The table below contains all of the details we have for the 2020 GMC Sierra 2WD Automatic 10-spd 6-cyl, 3.0 L:

Automatic 6-spd 8-cyl, 5.3 L

The table below contains all of the details we have for the 2020 GMC Sierra 2WD Automatic 6-spd 8-cyl, 5.3 L:

Automatic 6-spd 8-cyl, 5.3 L

The table below contains all of the details we have for the 2020 GMC Sierra 2WD Automatic 6-spd 8-cyl, 5.3 L:

Automatic 8-spd 4-cyl, 2.7 L

The table below contains all of the details we have for the 2020 GMC Sierra 2WD Automatic 8-spd 4-cyl, 2.7 L:

Automatic 8-spd 8-cyl, 5.3 L

The table below contains all of the details we have for the 2020 GMC Sierra 2WD Automatic 8-spd 8-cyl, 5.3 L:

Disclaimer

Ratings were provided by the manufacturer to the U.S. Department of Energy, which is where we sourced the data. Be advised that manufacturers may have upgraded, downgraded, or changed these ratings following the compilation of this data.

MPG Buddy does not guarantee the accuracy of this data, nor are we liable for any decisions made by referencing this data. Make sure to contact the specific car manufacturer to confirm accuracy.

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