Cummins Reveals X15D Engine

Cummins will showcase its new X15D engine at the 2025 Brisbane Truck Show, highlighting what it describes as a next-generation diesel platform for on-highway transport. The engine delivers a peak output of 660 hp and 2360 lb-ft of torque and is designed to meet Euro 6 emissions standards. The company says the X15D introduces improvements in fuel efficiency, performance and weight, including a 225 kg reduction compared to the current X15.

Currently available in the DAF XG cabover under the PX-15 name, the X15D is paired with a 16-speed automated transmission and is rated for a gross combination mass of up to 97 tonnes. Cummins adds that the engine has undergone a local validation program involving 18 trucks and around six million kilometres of field testing.

“It delivers the highest-ever outputs for a Cummins truck engine while setting new standards for fuel efficiency at ultra-low emissions levels.” said Sean McLean, Director and General Manager of On-Highway Business for Cummins South Pacific.

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