Photo: GMC Sierra by Ethan Llamas, CC BY-SA 4.0, via Wikimedia Commons. It shows the model, not always this exact version.
GMC · model year 2023
2023 GMC Sierra Mud Terrain Tires 4WD
Pickup · 4-Wheel Drive · Diesel · EPA class: Standard Pickup Trucks 4WD
EPA figures · 2023fueleconomy.gov
22MPG combined
21/23MPG city / highway
$4,350fuel a year
463 g CO₂ per mile 3.0 L 6-cyl turbo Automatic 10-spd
This car on fueleconomy.gov, read 2 October 2026. Your own figures depend on how and where you drive.
Where it places
Every figure on record
- Combined MPG
- 22 MPG
- City MPG
- 21 MPG
- Highway MPG
- 23 MPG
- Annual fuel cost
- $4,350
- Tailpipe CO₂
- 463 g per mile
- Model year
- 2023
- Body
- Pickup
- EPA size class
- Standard Pickup Trucks 4WD
- Drive
- 4-Wheel Drive
- Engine
- 3.0 L 6-cyl turbo
- Transmission
- Automatic 10-spd
- Fuel
- Diesel
Efficiency
Running cost
The car
Powertrain
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16 MPG · $4,200 fuel a year 2023 GMC Sierra Mud Terrain Tires 4WD
16 MPG · $4,200 fuel a year 2023 GMC Sierra Mud Terrain Tires 4WD
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