2026 Chevrolet Silverado 4WD ZR2 (Sport/Off Road) MPG & Specs — Real Fuel Cost
Quick answer
The 2026 Chevrolet Silverado 4WD ZR2 (Sport/Off Road) gets an EPA-estimated 20/23 MPG (city/highway) and 21 MPG combined, with an estimated $3,800/year fuel cost and 480 g/mi CO₂. Engine: 3 L 6-cyl.
The 2026 Chevrolet Silverado 4WD ZR2 (Sport/Off Road) with the 3-liter 6-cylinder diesel engine returns an EPA-estimated 20 MPG in the city and 23 MPG on the highway, for a combined 21 MPG. This page summarizes the official EPA fuel-economy and emissions data for this configuration.
| Engine | 3 L 6-cyl |
| Transmission | Automatic 10-spd |
| Drive | 4-Wheel Drive |
| Fuel type | Diesel |
| Vehicle class | Standard Pickup Trucks 4WD |
| MPG — city | 20 |
| MPG — highway | 23 |
| MPG — combined | 21 |
| Annual fuel cost* | $3,800 |
| CO₂ tailpipe | 480 g/mi |
| EPA GHG score | 4/10 |
How efficient is it?
With a combined 21 MPG, the 2026 Chevrolet Silverado 4WD ZR2 (Sport/Off Road) sits in the moderate range for fuel economy. That is about average for its class (Standard Pickup Trucks 4WD, 21 MPG average).
Fuel economy and running costs
At about $3,800 per year in fuel (EPA estimate, 15,000 mi/yr), fuel is a major part of the cost of owning the 2026 Chevrolet Silverado 4WD ZR2 (Sport/Off Road). Over five years that is roughly $19,000 at today's prices — before insurance, maintenance, and depreciation.
Emissions
The 2026 Chevrolet Silverado 4WD ZR2 (Sport/Off Road) emits approximately 480 grams of CO₂ per mile at the tailpipe, earning an EPA greenhouse-gas score of 4 out of 10. Lower emissions generally track higher fuel economy.
How to read these numbers
EPA figures come from standardized laboratory test cycles and are the same estimates shown on the vehicle's window sticker. Your real-world mileage depends on driving style, conditions, fuel grade, and maintenance. Use combined MPG and annual fuel cost to compare vehicles fairly.