2020 GMC Sierra AT4 MPG
Official EPA fuel-economy rating for the 2020 GMC Sierra AT4.
EPA combined fuel economy
16–24MPG
combined (55% city / 45% hwy)
City
17
MPG
Highway
21
MPG
Engine
3–6.2L
Cylinders
8
Drive
4WD
Class
Standard Pickup Trucks 4WD
Running cost
Estimated annual fuel cost
Per year
$2,625
15,000 mi/yr
Fuel used
750 gal
per year
At gas price
$3.50
per gallon
Based on 20 MPG combined and 15,000 miles per year. Adjust for your local gas price and annual mileage.
Other GMC Sierra AT4 years
FAQ
2020 GMC Sierra AT4
- How many MPG does a 2020 GMC Sierra AT4 get?
- The 2020 GMC Sierra AT4 gets 16–24 MPG combined according to the EPA — about 17 MPG in the city and 21 MPG on the highway, depending on trim (5 configurations). Combined MPG is a 55% city / 45% highway blend.
- What is the annual fuel cost for a 2020 GMC Sierra AT4?
- Driving 15,000 miles a year at 20 MPG combined, the 2020 GMC Sierra AT4 uses about 750 gallons of fuel per year — roughly $2,625 at $3.50/gallon. Your real cost varies with local gas prices and driving style.
- What is the difference between city and highway MPG on the 2020 GMC Sierra AT4?
- The 2020 GMC Sierra AT4 returns 17 MPG city and 21 MPG highway. Highway is higher because steady-speed cruising avoids the stop-and-go acceleration that burns fuel in city driving. The 16–24 MPG combined figure blends the two.
- Is 20 MPG good for a standard pickup trucks 4wd?
- For a standard pickup trucks 4wd, 20 MPG combined is on the thirstier side. Hybrid trims and smaller engines, where offered, return better numbers.
Related tools