2021 GMC Sierra 1500 Fuel Tank

15–22 mpg
City MPG: 20–26 mpg
Highway MPG: 17 mpg
Estimated combined: 24.0–28.0 gal
Fuel tank: 728 mi
Est. highway range

Lowest stored city MPG15 mpg — 4 configurations tie for lowest
Best stored city MPG22 mpg · AT4 4x4 Crew Cab 6.6 ft. box 157 in. WB
Lowest stored highway MPG20 mpg — 4 configurations tie for lowest
Best stored highway MPG26 mpg · AT4 4x4 Crew Cab 6.6 ft. box 157 in. WB
SpreadThe largest stored highway-MPG difference across configurations is 6 MPG. City MPG differs by up to 7 MPG.

Estimated from catalog valuesEstimated highway range from catalog MPG × tank.

Estimated range

Estimated from catalog MPG × tank capacity for the highest catalog MPG this year. Not a guaranteed real-world driving range. Combined MPG is 55% city / 45% highway — this catalog has no combined column.

City range

616 mi

Highway range

728 mi

Combined range

666 mi

Tank

28.0 gal

Trip fuel

Compare configurations

Configuration	City	Highway	Tank	Engine
AT4 4x4 Crew Cab 5.75 ft. box 147.4 in. WB	16 mpg	21 mpg	24.0 gal	5.3 liters V-8
Denali 4x2 Crew Cab 5.75 ft. box 147.4 in. WB	17 mpg	23 mpg	24.0 gal	5.3 liters V-8
Denali 4x4 Crew Cab 5.75 ft. box 147.4 in. WB	16 mpg	22 mpg	24.0 gal	5.3 liters V-8
Denali 4x4 Crew Cab 6.6 ft. box 157 in. WB	16 mpg	22 mpg	24.0 gal	5.3 liters V-8
Elevation 4x2 Crew Cab 5.75 ft. box 147.4 in. WB	20 mpg	23 mpg	24.0 gal	2.7 liters I-4
Elevation 4x2 Double Cab 6.6 ft. box 147.4 in. WB	20 mpg	23 mpg	24.0 gal	2.7 liters I-4
Elevation 4x4 Double Cab 6.6 ft. box 147.4 in. WB	18 mpg	21 mpg	24.0 gal	2.7 liters I-4
SLE 4x2 Crew Cab 5.75 ft. box 147.4 in. WB	20 mpg	23 mpg	24.0 gal	2.7 liters I-4
SLE 4x2 Double Cab 6.6 ft. box 147.4 in. WB	20 mpg	23 mpg	24.0 gal	2.7 liters I-4
SLE 4x4 Double Cab 6.6 ft. box 147.4 in. WB	18 mpg	21 mpg	24.0 gal	2.7 liters I-4
SLT 4x2 Crew Cab 5.75 ft. box 147.4 in. WB	17 mpg	23 mpg	24.0 gal	5.3 liters V-8
SLT 4x4 Crew Cab 5.75 ft. box 147.4 in. WB	16 mpg	22 mpg	24.0 gal	5.3 liters V-8
SLT 4x4 Crew Cab 6.6 ft. box 157 in. WB	16 mpg	22 mpg	24.0 gal	5.3 liters V-8
AT4 4x4 Crew Cab 6.6 ft. box 157 in. WB	22 mpg	26 mpg	24.0 gal	3.0 liters I-6
Elevation 4x4 Crew Cab 5.75 ft. box 147.4 in. WB	18 mpg	21 mpg	24.0 gal	2.7 liters I-4
Elevation 4x4 Crew Cab 6.6 ft. box 157 in. WB	18 mpg	21 mpg	24.0 gal	2.7 liters I-4
SLE 4x4 Crew Cab 5.75 ft. box 147.4 in. WB	18 mpg	21 mpg	24.0 gal	2.7 liters I-4
SLE 4x4 Crew Cab 6.6 ft. box 157 in. WB	18 mpg	21 mpg	24.0 gal	2.7 liters I-4
Base 4x2 Crew Cab 5.75 ft. box 147.4 in. WB	16 mpg	21 mpg	24.0 gal	4.3 liters V-6
Base 4x2 Double Cab 6.6 ft. box 147.4 in. WB	16 mpg	21 mpg	24.0 gal	4.3 liters V-6
Base 4x2 Regular Cab 8 ft. box 139.6 in. WB	16 mpg	21 mpg	28.0 gal	4.3 liters V-6
Base 4x4 Crew Cab 5.75 ft. box 147.4 in. WB	15 mpg	20 mpg	24.0 gal	4.3 liters V-6
Base 4x4 Crew Cab 6.6 ft. box 157 in. WB	15 mpg	20 mpg	24.0 gal	4.3 liters V-6
Base 4x4 Double Cab 6.6 ft. box 147.4 in. WB	15 mpg	20 mpg	24.0 gal	4.3 liters V-6
Base 4x4 Regular Cab 8 ft. box 139.6 in. WB	15 mpg	20 mpg	28.0 gal	4.3 liters V-6

Compare two configurations

Questions

Which 2021 GMC Sierra 1500 configuration has the best stored highway MPG?: 26 mpg · AT4 4x4 Crew Cab 6.6 ft. box 157 in. WB
What is the estimated highway range?: About 728 miles from the highest stored highway MPG × tank capacity.

Estimated from catalog MPG × tank capacity. Combined MPG is 55% city / 45% highway because this extract has no combined column.