2025 Chevy Duramax Mpg Specs. The motortrend buyer's guide has the 2025 chevrolet silverado 2500hd specs you need, from dimensions and cargo space to power and mpgs. Going next week to order my truck, and i'm seriously torn on which to get.

Current truck is a 2014 duramax with the 6 speed. We put it on the denver 100 mpg loop.