The US Marine Corps has contracted Mack Defense to develop two mock-up vehicles for the service’s Medium Tactical Truck (MTT) program.
The MTT initiative aims to replace the force’s Oshkosh-made medium tactical fleet operational since the 2000s, which consists of cargo, re-supply, tractor, dump, and wrecker systems for combat support tasks.
Mack’s prototypes will include a 4×4 variant with a 10-foot (3-meter) cargo bed and a 6×6 variant with a 20-foot (6-meter) cargo bed.
The platforms will be modeled after the Pennsylvania-based company’s flagship Granite heavy-duty conventional straight truck, with some features designed according to the marine corps’ specific requirements.
Capabilities to be integrated into the vehicles are collision avoidance sensors, blind spot detectors, dynamic traction, and anti-lock brakes.
Work for the contract will begin in the third quarter of 2025, with completion slated for early autumn.
The systems will then be sent to the Nevada Automotive Test Center to receive comprehensive contractor performance trials in the first half of 2026 before shipment to the military.
“These prototypes represent the next generation of purpose-built, specialty vehicles for the Marine Corps,” Mack Defense President David Hartzell stated.
“By leveraging our commercial vehicle technology expertise and adapting it for military applications, we’re delivering a highly capable platform that can perform in the most challenging terrains, while incorporating advanced safety features and hybrid propulsion systems that meet the Marine Corps’ rigorous mission requirements.”
The MTT Program
Mack’s prototype award followed a 12-month initial development phase contract it received in 2024, which ordered plans for three MTT variants in 10, 15, and 20-foot (3, 5, 6-meter) configurations.
Vehicles assembled through the effort will feature optimal weight and improved payload capacity.
They will also be fitted with a hybrid-electric technology for efficient fuel consumption, extended range, and reduced noise for covert missions.
Moreover, the trucks will have an open systems architecture to support evolving requirements and future autonomy integrations, as well as an interchangeable profile for expeditionary deployments that typically involve traversing deep water tracks.
