As Arctic and high-altitude mobility takes center stage among NATO allies, advanced all-terrain tracked vehicles took the spotlight at Eurosatory 2026. Singapore’s ST Engineering showcased its Bronco 3 All Terrain Tracked Carrier (ATTC) platform in a specialized configuration tailored specifically for the Austrian Army’s stringent mountain warfare requirements. Originally designed to navigate soft, forgiving terrain, the platform has undergone a comprehensive suite of mechanical and structural upgrades to meet the grueling demands of operating in high-elevation alpine environments characterized by steep gradients and unforgiving topographies. It is a hardened tracked vehicle was developed in collaboration with its Austrian partners ESLAIT and Empl.
Central to these alpine enhancements are significant modifications to the vehicle’s powertrain and braking systems. While the Bronco 3 retains its core power output, ST Engineering has optimized the torque profile to provide superior climbing capability on severe inclines. To address the hazards of steep descents, the vehicle features an integrated exhaust brake system that restricts exhaust flow to generate engine backpressure, enabling natural deceleration without relying on traditional brake pads. This capability is augmented by the addition of differential locks for enhanced traction control, alongside the integration of ST Engineering’s CleArmour transparent ceramic windscreen and windows, which offer superior multi-hit armor-piercing threat mitigation at half the weight of conventional glass armor.
The Bronco 3 represents the strategic maturation of the All Terrain Tracked Carrier (ATTC) family, a twin-chassis articulated lineage originally co-developed by ST Kinetics and Singapore’s Defence Science and Technology Agency (DSTA). This iterative design directly incorporates extensive operational feedback from over 15 years of Singaporean service and British Army deployments of the Bronco 2 variant, known as the Warthog, in Afghanistan. Development of the third-generation platform began with the critical objective of matching the robust protection levels of the heavy Warthog while reverting to the agile 16-tonne gross vehicle weight base of the original Bronco 1, thereby preserving vital amphibious capabilities up to speeds of 5 km/h.
To achieve this survivability-to-weight ratio, both modules were re-engineered with blast-deflecting V-shaped hulls suspended from a stiffened chassis via four rubber isolators, which simultaneously reduce noise, vibration, and harshness by 50% while allowing rear-module swaps in under 30 minutes. Mine and improvised explosive device (IED) protection is further enhanced by raising the rear wagon’s ground clearance to one meter, complemented by an elevated roofline that expands internal volume to 5.2 m³ in the front module and 7.9 m³ in the rear. Powering these advancements is a new Mercedes-MTU TD106 325 hp engine, which delivers the higher torque threshold essential for Austrian mountain maneuvers alongside reduced fuel consumption.
