GMC Sierra 4WD AT4X MPG and Fuel Economy
GMC have been manufacturing models of Sierra 4WD AT4X for 1 year, with the latest vehicle in 2023 having a combined MPG of 15.
The estimated fuel cost for the 2023 GMC Sierra 4WD AT4X is $4,250 per year.
Government regulators have estimated that value based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.
💵 Compared to an average vehicle over 5 years, you will spend $12,250 more on fuel driving a 2023 GMC Sierra 4WD AT4X.
🛢 The GMC Sierra 4WD AT4X will consume roughly 20 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.
💨 For every mile driven, the GMC Sierra 4WD AT4X will emit 585 grams of CO2, which is about 8,775,000 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 418 trees would be needed to offset emissions from the GMC Sierra 4WD AT4X.
The table below is a complete list of the 1 GMC Sierra 4WD AT4X fuel efficiency specifications we have data for.
Click any vehicle link to see a more detailed breakdown of the car, miles per gallon, emissions, and more.
| Vehicle | Combined MPG | Fuel Cost |
|---|---|---|
| 2023 GMC Sierra 4WD AT4X | 15 | $4,250 |
Link To or Reference This Page
If you use this page in your research, please reference MPG Buddy as the source.
<a href="https://mpgbuddy.com/cars/gmc/sierra-4wd-at4x">GMC Sierra 4WD AT4X MPG and Fuel Economy</a>
"GMC Sierra 4WD AT4X MPG and Fuel Economy." MPG Buddy. Accessed on December 27, 2025. https://mpgbuddy.com/cars/gmc/sierra-4wd-at4x.
"GMC Sierra 4WD AT4X MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/gmc/sierra-4wd-at4x. Accessed December 27, 2025.
GMC Sierra 4WD AT4X MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/gmc/sierra-4wd-at4x.