How many miles per gallon does a 2023 Silverado 2500 6.6 get?
In general, the 2023 Silverado 2500HD with the 6.6-liter gasoline V8 delivers about 12–13 miles per gallon combined, with roughly 9–12 mpg in city driving and 15–17 mpg on the highway, depending on drivetrain and configuration.
What the EPA ratings say and what affects them
EPA fuel economy estimates for the Silverado 2500HD vary by drivetrain (2WD vs. 4WD), cab style, bed length, and other options. The gas-powered 6.6L V8 competes with a diesel option, and the exact mpg can shift based on payload, towing, terrain, tire size, and accessory equipment. Real-world mileage often falls below the ideal EPA figures when the truck is carrying heavy loads or towing.[/p]
How configuration influences mpg
Because the Silverado 2500HD is offered in multiple body styles (regular, double cab, crew cab) and bed lengths, as well as both 2WD and 4WD drivetrains, the precise mpg varies by build. In general, 4WD configurations tend to be slightly less fuel-efficient than 2WD equivalents, and heavier configurations with larger beds or higher payloads can further affect fuel economy.
Gas engine vs. diesel context
Chevrolet also offers a 6.6L Duramax diesel option for the Silverado 2500HD. The diesel typically provides better fuel efficiency, especially on the highway and when towing, compared with the gasoline version. Exact numbers depend on the specific configuration, so customers should compare the EPA window stickers for the exact build they're considering.
For anyone evaluating a 2023 Silverado 2500HD with the 6.6L gas engine, the takeaway is that mpg sits in the low-teens overall, with noticeable variation by drivetrain and configuration. Always verify the precise figures on the EPA website or the vehicle’s window sticker for the exact setup you’re interested in.
Summary
The 2023 Silverado 2500HD with the 6.6L gasoline V8 is a heavy-duty pickup whose fuel economy is modest by design. Typical estimates place combined mpg around 12–13, with city driving near 9–12 and highway around 15–17, varying with drivetrain, cab/bed configuration, and payload. The diesel version generally offers better efficiency, particularly when highway driving or towing, but exact numbers depend on the specific configuration. Always check the official EPA ratings for the exact build you’re considering.
