2026 SILVERADO 1500 FUEL ECONOMY · GRANITE CITY
There is no single MPG figure that describes every 2026 Chevrolet Silverado 1500. Engine, drivetrain and configuration matter, and the same trim name can appear on trucks with different equipment. Start with the actual vehicle’s fuel-economy label, then compare it with the way you drive.
Browse Silverado 1500 inventory at Weber Chevrolet Granite City near St. Louis. Send the stock numbers you are comparing and we can help identify the engine, drivetrain and relevant rating for each actual truck.
Chevrolet offers TurboMax, 5.3L gasoline V8, 6.2L gasoline V8 and 3.0L Duramax turbo-diesel choices in the 2026 Silverado 1500 lineup, with availability depending on configuration. An LT, RST or another trim name does not by itself identify the engine or fuel-economy rating.
Record the engine, 2WD or 4WD configuration, tires and any relevant package information for each listing. Ask for the applicable city, highway and combined figures on its label. Our 2026 Silverado trim guide can help with equipment selection, but the vehicle’s fuel-economy label is the starting point for an MPG comparison.
On a smaller screen, scroll across the table to compare all columns.
| Item | Reason to check it |
|---|---|
| Model year and stock number | Keeps the comparison tied to an actual 2026 vehicle |
| Engine and fuel type | Distinguishes gasoline and diesel choices |
| Drivetrain and configuration | Avoids applying another truck’s rating |
| City, highway and combined MPG | Lets you compare the same measure across vehicles |
Chevrolet advertises up to 28 MPG highway with the available 3.0L Duramax diesel in a qualifying 2026 Silverado 1500 configuration. That is a highway reference, not a combined rating for all trims or a prediction for a loaded trailer trip. Confirm the exact configuration and label before using it in your comparison.
For mixed driving, compare combined figures with combined figures rather than one vehicle’s highway number against another’s city number. EPA labels also show an estimated annual fuel cost based on stated assumptions. Your mileage and local fuel price may differ, so adjust the calculation to your own use rather than treating the printed cost as a personal quote.
A simple planning calculation is annual miles divided by expected MPG, multiplied by price per gallon. Use a realistic MPG assumption for your driving and the appropriate price for the fuel the engine requires. For a gasoline-versus-diesel comparison, use a separate fuel price for each rather than assuming both cost the same.
For illustration only, 12,000 miles at 20 MPG uses 600 gallons; at an assumed $3.50 per gallon, that is $2,100. At 25 MPG with the same mileage and assumed fuel price, consumption is 480 gallons and cost is $1,680. These are arithmetic examples, not Silverado ratings, current fuel prices or promised savings. Substitute the actual configurations and your assumptions before drawing a conclusion.
A truck used for repeated short trips, idling, heavy loads or towing will face a different pattern from one used mainly for steady highway driving. Weather, traffic, speed and maintenance also influence consumption. Consider how often the truck will do its hardest job and avoid assuming an unladen label estimate describes every working day.
The engine still needs to suit the task. Use the 2026 Silverado towing guide to organize trailer questions, and compare gasoline versus diesel ownership alongside fuel expense. A small difference in estimated fuel cost should not replace a review of the truck’s actual ratings, purchase price and maintenance needs.
Ask for two proposals that identify each truck’s equipment and selling price. Add your fuel estimate, expected ownership period and other relevant costs, then compare trade and financing separately. A lower payment can reflect a longer term or a larger down payment rather than a lower total cost.
Use Value Your Trade and the finance center when you are ready to discuss options. For a used alternative, compare used Silverado 1500 inventory by year, engine and condition. If consumption has changed noticeably on the vehicle you already drive, arrange an appropriate discussion with our service department.
References are Chevrolet’s 2026 diesel fuel-economy information and the EPA/DOE explanation of the fuel-economy label.
The trim name does not establish every mechanical detail. Engine, drivetrain and configuration can differ, so compare the actual vehicle labels.
No. Chevrolet’s figure is a highway rating for a qualifying configuration. Actual fuel economy varies, and it is not a universal combined or towing estimate.
Use the same measure across vehicles and choose assumptions that reflect your driving. Combined MPG is a useful starting reference for mixed use; your real results can differ.
No. They are clearly hypothetical arithmetic examples. Use the rating for your actual truck and your expected mileage and fuel price.
Send two stock numbers and your driving and towing pattern. We can help identify each truck’s configuration so you can make a more useful fuel-economy and purchase comparison.
