2020 GMC Sierra 2WD

Vehicle specifications and fuel economy data from EPA/DOE

Combined MPG

City MPG

Highway MPG

Fuel Type

Diesel

Annual Fuel Cost

$2,150

CO2 (g/mi)

392

Vehicle Details

Year: 2020
Make: GMC
Model: Sierra 2WD
Vehicle Class: Standard Pickup Trucks 2WD
Engine: 6 cylinders, 3.0L
Transmission: Automatic 10-spd
Drive: Rear-Wheel Drive
Fuel Type: Diesel

All Trims

Trim	City	Highway	Combined	Fuel	Engine	Transmission
Auto 10-spd, 6 cyl, 3.0 L, Diesel, Turbo	23	30	26	Diesel	6 cyl 3.0L	Automatic 10-spd
Auto 8-spd, 4 cyl, 2.7 L, Turbo, SIDI; 4-mode/Sport transmission	20	23	21	Regular	4 cyl 2.7L	Automatic 8-spd
Auto 8-spd, 4 cyl, 2.7 L, Turbo, SIDI; 3-mode transmission (work truck)	19	22	20	Regular	4 cyl 2.7L	Automatic 8-spd
Auto 8-spd, 8 cyl, 5.3 L, SIDI; XFE Package	17	24	20	Regular	8 cyl 5.3L	Automatic 8-spd
Auto 8-spd, 8 cyl, 5.3 L, SIDI	17	23	19	Regular	8 cyl 5.3L	Automatic 8-spd
Auto 6-spd, 6 cyl, 4.3 L, SIDI	16	21	17	Regular	6 cyl 4.3L	Automatic 6-spd
Auto 6-spd, 8 cyl, 5.3 L, SIDI	15	21	17	Regular	8 cyl 5.3L	Automatic 6-spd
Auto 6-spd, 8 cyl, 5.3 L, SIDI; FFV	15	19	16	Gasoline or E85	8 cyl 5.3L	Automatic 6-spd

Other Years

2026 (25 MPG)2025 (26 MPG)2024 (25 MPG)2023 (26 MPG)2022 (26 MPG)2021 (26 MPG)

About This Data

Fuel economy data from the U.S. Department of Energy and EPA fueleconomy.gov. MPG estimates are based on standardized EPA test procedures. Actual mileage may vary based on driving conditions, habits, and vehicle maintenance. Annual fuel cost estimates are based on 15,000 miles driven per year at current fuel prices.

What is combined MPG?

Combined MPG is a weighted average of city (55%) and highway (45%) fuel economy. It represents typical mixed driving conditions.

What is MPGe?

MPGe (miles per gallon equivalent) is used for electric and plug-in hybrid vehicles. It represents the distance a vehicle can travel on the same amount of energy as one gallon of gasoline (33.7 kWh).