Coast of Cars

GMC
Sierra 4WD AT4

U.S. fuel economy and specifications from the EPA.

Explore all GMC vehicles by ZIP
GMC Sierra 1500 full-size pickup as sold in the 2020s
24Best combined MPG2020 model year
2020–2021Model years2 with EPA ratings
13Rated configurationsDrive, transmission and engine
3–6.2 LEngine sizeDisplacement

Best combined MPG by model year

The highest EPA rating among each year's configurations.

2020 24 MPG
2021 24 MPG

8 configurations.

4-Wheel Drive · Automatic 10-spd

Premium gasoline · Standard Pickup Trucks 4WD

Combined MPG
17
Engine displacement
6.2 L
Cylinders
8
EPA listing for this configuration: 2021, 4-Wheel Drive, Automatic 10-spd, 6.2 L, Premium

4-Wheel Drive · Automatic 10-spd

Diesel · Standard Pickup Trucks 4WD

Combined MPG
24
Engine displacement
3.0 L
Cylinders
6
EPA listing for this configuration: 2021, 4-Wheel Drive, Automatic 10-spd, 3.0 L, Diesel

4-Wheel Drive · Automatic 10-spd

Regular gasoline · Standard Pickup Trucks 4WD

Combined MPG
18
Engine displacement
5.3 L
Cylinders
8
EPA listing for this configuration: 2021, 4-Wheel Drive, Automatic 10-spd, 5.3 L, Regular

4-Wheel Drive · Automatic 8-spd

Regular gasoline · Standard Pickup Trucks 4WD

Combined MPG
18
Engine displacement
5.3 L
Cylinders
8
EPA listing for this configuration: 2021, 4-Wheel Drive, Automatic 8-spd, 5.3 L, Regular

4-Wheel Drive · Automatic 6-spd

Regular gasoline · Standard Pickup Trucks 4WD

Combined MPG
16
Engine displacement
5.3 L
Cylinders
8
EPA listing for this configuration: 2021, 4-Wheel Drive, Automatic 6-spd, 5.3 L, Regular

4-Wheel Drive · Automatic 8-spd

Regular gasoline · Standard Pickup Trucks 4WD

Combined MPG
16
Engine displacement
5.3 L
Cylinders
8
EPA listing for this configuration: 2021, 4-Wheel Drive, Automatic 8-spd, 5.3 L, Regular

4-Wheel Drive · Automatic 10-spd

Premium gasoline · Standard Pickup Trucks 4WD

Combined MPG
16
Engine displacement
6.2 L
Cylinders
8
EPA listing for this configuration: 2021, 4-Wheel Drive, Automatic 10-spd, 6.2 L, Premium

4-Wheel Drive · Automatic 10-spd

Regular gasoline · Standard Pickup Trucks 4WD

Combined MPG
17
Engine displacement
5.3 L
Cylinders
8
EPA listing for this configuration: 2021, 4-Wheel Drive, Automatic 10-spd, 5.3 L, Regular

More California data

All GMC models California make distribution