2024 Chevrolet Silverado 2500hd Gas Mileage Diesel. 2024 chevrolet silverado 2500hd high country 4wd vehicle type: Use our handy tool to get estimated annual fuel costs based on your driving habits.

Official epa estimates predict the zr2 will average 20 mpg in town and 22 mpg on the highway, for a combined rating of 21 mpg. 1984 to present buyer’s guide to fuel efficient cars and trucks.