Peterbilt Motors Company announced Tuesday its availability of a new lightweight engine designed for endurance, quieter performance and fuel efficiency. The PACCAR MX-11 engine is available on the ...

Mack and Peterbilt are both well-known names in trucking, and both have sizable chunks of the U.S. market. So how do these ...

Peterbilt said the new MX-13 version meets the CARB Omnibus Regulation and features redesigns of internal hardware and the aftertreatment system to effectively reduce NOx emissions. The larger volume ...

This Peterbilt 579 is powered by the Cummins X15N natural gas engine – Cummins' latest, greatest and biggest natural gas engine. Peterbilt has fully integrated the X15N with its Model 579 powertrain ...

Peterbilt announced the new MX-13 is available for order in its Models 579, 567, and 589 trucks. Kenworth announced that the new CARB-compliant engine is now available to order on its T680, T880, and ...

The Peterbilt 579 featured in the video up top is powered by the Cummins X15N natural gas engine. It's the engine maker's latest and greatest natural gas engine and just one of three engines in the ...

Peterbilt has announced the availability of Paccar TX-12 automated transmissions with Paccar PX-9 engines. The spec is for Peterbilt medium duty Models 548, 537 and 536. Peterbilt said both the ...