2021 GMC Sierra 2WD
Fuel Economy Overview
The 2021 GMC Sierra 2WD achieves an EPA-estimated 26 MPG in combined city and highway driving, with 23 MPG in the city and 30 MPG on the highway. Powered by a 3L 6-cylinder turbocharged engine paired with a automatic 10-spd, this standard pickup trucks 2wd features Rear-Wheel Drive drive.
In terms of environmental impact, the 2021 Sierra 2WD produces approximately 392 grams of CO2 per mile. This figure is measured under standardized EPA test conditions and represents tailpipe emissions only. For context, the average new vehicle sold in the United States produces approximately 400 grams of CO2 per mile, meaning this Sierra 2WD performs better than the national average in this regard.
The estimated annual fuel cost for this vehicle is $3,100, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $4,750 over a 5-year period. This calculation accounts for differences in fuel consumption efficiency and provides a practical measure of long-term ownership costs attributable to fuel economy.
Energy DNA
Green Scorecard
Personalized Commute CalculatorEPA defaults to 55% City / 45% Hwy
Adjust the slider to match your daily driving habits. City driving involves stop-and-go traffic under 45mph, while highway driving represents sustained speeds over 55mph.
The Brick Effect: Highway Speed Penalty
EPA highway tests average roughly 48 mph. Driving at 75 mph increases aerodynamic drag exponentially. Because the Standard Pickup Trucks 2WD has a large frontal area, expect your real-world highway fuel economy to drop by up to 25% at high speeds.
5-Year Total Cost of Ownership
Recall Intelligence
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Looking for comprehensive historical data?
NHTSA FARS (Fatal Crash History) and broader generational safety trends are aggregated at the model level rather than by specific engine configurations. View the complete historical data profile for all GMC Sierra 2WD configurations.
Similar 2021 Standard Pickup Trucks 2WD Alternatives
2021 Ram 1500 2WD
3L 6-cyl Rear-Wheel Drive
2021 Ram 1500 HFE 2WD
3L 6-cyl Rear-Wheel Drive
2021 Chevrolet Silverado 2WD
3L 6-cyl Rear-Wheel Drive
2021 Ford F150 Pickup 2WD HEV
3.5L 6-cyl Rear-Wheel Drive
2021 Ford Ranger 2WD
2.3L 4-cyl Rear-Wheel Drive
2021 Ram 1500 HFE 2WD
3.6L 6-cyl Rear-Wheel Drive
Fuel Cost Analysis
Based on 15,000 miles/year and current fuel prices.
Efficiency Breakdown
Estimated Lifetime Carbon Footprint
(Based on 200,000 miles driven)