2024 Chevy 2024 Duramax Fuel Mileage. My gas chevy got about the same mileage empty as the duramax trucks i've owned. Does anyone have any real world data on the 2024 6.6 gas v/s 6.6 diesel fuel economy.

It’s also likely to improve the big truck’s fuel mileage. The 2024 silverado 2500 duramax diesel achieved a result of 18 mpg in our testing.