2024 Chevy Duramax 2024 Diesel Mpg Comparison. Department of energy estimates that a 2024 chevrolet silverado 2wd with the duramax manages a combined 26 mpg. 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 mpg the epa says the truck should.

Current truck is a 2014 duramax with the 6 speed. The 2024 chevy silverado zr2’s duramax diesel engine has proven efficient, but we weren’t ready for its astonishing best tank of 34 mpg with 826 miles of range!