Marine Corps Selects Mack Defense As Prototype Participant For Medium Tactical Truck Development Program

Story by Ashley Calingo
Marine Corps Systems Command

Marine Corps Base Quantico, VA – The Marine Corps has selected Mack Defense and Navistar Defense to participate in Phase I for the development of the Medium Tactical Truck (MTT) program. This pivotal phase, spanning an estimated 12 months, will see the performers leveraging the Corps’ top-level requirements to submit innovative design concepts and comprehensive project plan for Phase 1.
The Medium Tactical Truck is slated to replace the existing Medium Tactical Vehicle Replacement (MTVR) fleet, including Cargo, Dump, Wrecker, Tractor, and Re-Supply Variants. The focus of the competitive prototype phase will be on the Cargo variant.

Key top-level requirements for the Medium Tactical Truck include:

1. Cargo Variants: The MTT Cargo variants consist of three configurations:
a. 10 ft Cargo bed
b. 15 ft Cargo bed
c. 20 ft Cargo bed

2. Hybrid Electric Technologies: Integration of hybrid electric technologies for reduced fuel consumption, extended range, and a silent watch capability.

3. Onboard and Export Power: 10 kW on-board power generation to support all mission packages and scalable exportable power up to 30 kW to meet external system power demands.

4. Mobility: Continued robust all terrain mobility with a 70% off-road and 30% on-road mission profile, with a unique 60” water fording capability specific to the United States Marine Corps (USMC).

5. Safety and Stability: Advancements in safety and stability control systems, increased interoperability, and heightened mission flexibility through modularity and open systems architecture.

6. Armor System: Modular and scalable armor system that allows for the change/upgrade of force protection and survivability levels, considering ease of installation and maintenance.

7. Maintenance and Reliability: Advancements in condition-based maintenance systems, increased reliability, durability, and corrosion prevention.

The Marine Corps looks forward to collaborating with Mack Defense and Navistar Defense in this crucial development phase, working toward the common goal of delivering a Medium Tactical Truck that meets the diverse and challenging needs of Marine Corps missions.

For media inquiries, please contact:

Morgan Blackstock
Media Chief, Marine Corps Systems Command

Mack Defense, a wholly owned subsidiary of Mack Trucks, is responsible for the sale of heavy-duty trucks to federal- and ministerial-level customers globally. For more information, please visit

Mack Defense, LLC, is part of the Volvo Group, which is driving prosperity through transport solutions by offering trucks, buses, construction equipment, power solutions for marine and industrial applications, financing and services that increase customer uptime and productivity. Founded in 1927, the Volvo Group is committed to shaping the future landscape of sustainable transport and infrastructure solutions. The Volvo Group is headquartered in Gothenburg, Sweden, employs about 100,000 people and serves customers in more than 190 markets. In 2022, net sales amounted to about $47 billion. Volvo shares are listed on Nasdaq Stockholm. For more information, please visit

This effort was sponsored by the U.S. Government under Other Transaction Authority number W15QKN-17-9-1025 with the National Advanced Mobility Consortium. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the U.S. Government.