News: New 2023 Chevy Silverado 3.0L Duramax Diesel Efficiency Numbers Are Published

Efficiency and power go up!

2023 chevy silverado duramax diesel mpg epa numbers

GM recently announced the newly upgraded 3.0-liter Duramax I6 turbo-diesel engine that has more power and torque. It goes into their 2023 Chevy Silverado 1500 trucks (among others). Now, we have EPA fuel economy estimates. Turns out, you can have more power and better MPG at the same time. Take a look!

2023 Chevy Silverado

The newest (code: “LZ0”) 3.0L straight-six turbo-diesel is now rated at 305 horsepower and 495 lb-ft of torque. The engine is mated to a 10-speed automatic transmission. The EPA published the 2023 Silverado 1500 Diesel 2WD efficiency rating at 24 MPG city / 29 MPG highway / 26 MPG combined. While the combined 26 MPG is the same as the previous model, the new engine is slightly more efficient in the city and LESS efficient on the highway – according to the EPA. We will have to wait to test the new engine in the real world. Our experience suggests that this diesel may be even more efficient on our test driving loops than the EPA numbers.

Here is how the 2023 vs 2022 Silverado 4WD compare. The 4WD model actually gets a one MPG improvement to 24 MPG combined / 22 MPG city / 27 MPG highway.


As the price of diesel fuel is still high across most parts of the United States, these slightly better efficiency estimates are a very welcome sign. We cannot wait to get behind the wheels of these new 2023 trucks to experience the improved power as well.