2024 6.6l Duramax Turbo-Diesel V8 Engine Mpg. They still call this engine the l5p generation. For 2024, this burly powerplant sees an increase to 470 hp along with.
Gm’s and isuzu’s 6.6 duramax turbo diesel v8 was far ahead of its time when it came out, but alas, mpg wasn’t a top priority. Despite tipping the scales at a staggering 8,269 pounds, the silverado 2500hd rocketed from 0 to 60 mph in.