Video: Is the New 2024 Chevy Silverado HD Duramax The New King of MPG? We Put It On the Denver100 Loop to Find Out!

Here is what happens after 110 miles.

2024 chevy silverado hd 3500 duramax diesel mpg loop denver100

Is the new and refreshed 2024 Chevy Silverado HD Duramax turbo-diesel the new king of MPG in the heavy-duty pickup truck segment? We put it on the Denver 100 mpg loop to find out.

The truck we are testing here is a 2024 Chevy Silverado 3500 HD crew cab 4×4 LTZ model. It is very well optioned with most luxury features you expect. Under the hood is an updated 6.6L Duramax V8 with 470 hp and 975 lb-ft of torque and 10-speed automatic transmission. The power is sent to a 3.42-to-1 rear axle differential.

Just a little bit ago we drove an all-new 2023 Ford Super Duty F-350 dually from Detroit to Denver. This new 6.7L high-output V8 Power Stroke diesel returned 17.6 MPG when running unladen at highway speeds.

Let’s see how the new Duramax does on our 111-mile MPG loop!

Spoiler Alert: This new Chevrolet dually returned an impressive 17.7 MPG. At this point, the Duramax dually is the leader in efficiency, if only by a minor 0.1 MPG.