2024 Chevy 2024 Duramax Fuel Mileage. I have seen 20 on a drive that was 2 lane roads and 65 mph speed limit about 50 miles each way. The 2024 silverado 2500 duramax diesel achieved a result of 18 mpg in our testing.
The diesel greatly improves on those. The 2024 zr2, despite weighing an extra.