2024 Duramax Fuel Mileage Uk. The average mpg for a truck with a duramax engine varies depending on the truck model as well as on which duramax engine it has. I have heard the generation 1 l5p's were much better in the fuel economy.
A quick reset of one of the two trip computers and the next 162 miles registered at 22.2 mpg at an average speed of 72.7 mph, pretty much matching the 22. The attached document is classified by hmrc as guidance and contains information about rates and allowances for travel, including mileage and fuel allowances.
