The Detroit DD15: The Next Generation of Efficiency

The new DD15® engine is the latest innovation of the most popular Class 8 engine in North America. The latest DD15 has been significantly redesigned to offer new ratings, a new aftertreatment system and cutting-edge technology that offers a fuel efficiency increase of up to three percent. It’s just our way of driving the next generation of industry-leading efficiency and performance.



Inline 6 Cylinder


14.8 L

Compression Ratio





1150 - 1850

Service Fill (Oil & Filter Change)

45.7 L

Horsepower & Torque Curve

DD15 Gen 5 Vs GHG17 Graph 1.6

DD15: Model Options

An excellent choice for on-highway and over the road line-haul applications. The DD15 offers cutting-edge technology and enhancements for an unprecedented level of fuel efficiency and performance. Freightliner provides a wide range of new vehicle engines compliant with EPA, CARB emissions, GHG, and OBD requirements. Please consult your local dealer to ensure the selection of a product that meets your specific needs. To learn more about DD15-compatible Freightliner trucks, click on the following:

Blue Truck Homepage 327X450


On-Highway | 370-600 HP | Up to 2050 lb-ft Torque

Demand Detroit
Engine Family Gen5 1366X470
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