Chevrolet › Tahoe
2026 Chevrolet Silverado 1500 MPG: Fuel Economy by Engine
The 2026 Chevrolet Silverado 1500’s best fuel economy comes from the Duramax 3.0L diesel at roughly 28 mpg highway — the best in the full-size pickup class. The 2.7L TurboMax and 5.3L V8 deliver competitive gas mileage for the segment, while the 6.2L V8 prioritizes power over efficiency. Actual mileage varies with drivetrain, configuration, and towing.
In a state where a trip to town can be 40 miles each way, fuel economy isn’t a small thing — it adds up across a year of driving. The 2026 Silverado 1500 offers four engines with very different efficiency profiles, so here’s how they compare and what it means for your wallet.
Fuel Economy by Engine
Here’s how the four engines stack up on efficiency (highway figures, properly equipped — confirm exact EPA numbers for the specific configuration):
| Engine | Efficiency Profile |
|---|---|
| Duramax 3.0L Diesel | ~28 mpg hwy — best in class |
| 2.7L TurboMax | Competitive gas economy, strong for its capability |
| 5.3L EcoTec3 V8 | Solid all-around V8 economy |
| 6.2L EcoTec3 V8 | Power-focused; lowest of the four |
The Diesel Leads — By a Lot
The class-exclusive Duramax 3.0L turbo-diesel is the efficiency champion at roughly 28 mpg highway — the best of any full-size pickup, and Chevrolet notes it even beats a competitor’s hybrid on combined economy. Diesels are most efficient at steady highway speeds, and with a big fuel tank the Silverado diesel can exceed 600 miles of range per fill. For high-mileage drivers, the savings are real. (Is it worth the premium? See our diesel guide.)
The Gas Engines
Among the gas engines, the 2.7L TurboMax delivers competitive economy that’s genuinely impressive given its capability — turbo four efficiency with V8-rivaling torque. The 5.3L V8 is the balanced all-arounder. The 6.2L V8 trades efficiency for its 420 horsepower, so it posts the lowest numbers of the four — expected, and fine if power is your priority. Features like Dynamic Fuel Management (which can run the V8s on fewer cylinders when cruising) help stretch every gallon.
A Note on Towing and Real-World MPG
Remember that EPA figures are unloaded. Towing and hauling drop fuel economy significantly for any truck — that’s physics, not a Silverado quirk. If you tow often, the diesel’s efficiency advantage actually grows, since it works less hard to move a load. For mostly-empty daily driving, the gas engines close the gap.
If you’re running big highway miles or towing a lot, the diesel pays you back at the pump and the savings are real. If you’re mostly knocking around town empty, a gas engine makes more sense and costs less up front. We’ll do the math with you honestly — no point buying fuel economy you won’t use.
For the best fuel economy, the Duramax diesel is the clear winner at about 28 mpg highway, and it pays off fastest for high-mileage and towing drivers. For lighter daily use, the 2.7L TurboMax and 5.3L V8 offer competitive economy at a lower price.
Frequently Asked Questions
What MPG does the 2026 Silverado 1500 get?
The Duramax 3.0L diesel leads at about 28 mpg highway — best in the full-size pickup class. The 2.7L TurboMax and 5.3L V8 offer competitive gas economy, while the 6.2L V8 is power-focused with the lowest figures of the four. Confirm exact EPA numbers for a specific configuration.
Which Silverado engine is most fuel efficient?
The Duramax 3.0L turbo-diesel, at roughly 28 mpg highway. Chevrolet notes it beats even a competitor’s hybrid on combined fuel economy, and it can exceed 600 miles of range per tank.
How far can the Silverado diesel go on a tank?
With its efficiency and a large fuel tank, the Duramax diesel Silverado can exceed 600 miles of highway range per fill, depending on configuration and driving.
Does the 2.7L TurboMax get good gas mileage?
Yes, it offers competitive fuel economy for the class, which is impressive given its 9,500-pound towing and best-in-class standard torque. It’s an efficient choice among the gas engines.
Why does the 6.2L V8 have lower MPG?
The 6.2L V8 prioritizes maximum power — 420 horsepower and strong towing — over efficiency, so it posts the lowest fuel economy of the four engines. Dynamic Fuel Management helps, but power is its focus.
Does towing affect Silverado fuel economy?
Yes, significantly — for any truck. EPA figures are unloaded, and towing or hauling lowers mileage. The diesel’s efficiency advantage tends to grow when towing, since it works less hard to move a load.
Want to Run the Fuel Numbers?
Carter Chevrolet will help you weigh fuel economy against price for how you actually drive, then deliver the right Silverado to your door. Call (405) 546-1147.
Sources
- 2026 Chevrolet Silverado 1500 — Chevrolet (official product page), chevrolet.com
- 26MY Silverado LD Playbook and 2026 Silverado 1500 Order Guide — General Motors
- Fuel Economy Estimates — U.S. EPA / DOE, fueleconomy.gov