2025 Chevy 2025 6.6 Gas Mpg Range. 1984 to present buyer's guide to fuel efficient cars and trucks. Base price (as tested) $64,195 ($83,545) powertrain:

Different bed and cab combinations are available on the 2025 chevrolet silverado 2500hd. The most accurate 2025 chevrolet silverado 3500 hds mpg estimates based on real world results of 229 thousand miles driven in 23 chevrolet silverado 3500 hds.