Development as a protected patrol vehicle
Mastiff is the British version of the Cougar 6x6 MRAP family adapted for Iraq and Afghanistan-era threats.
Mastiff was procured by the UK as a heavily protected patrol vehicle based on the U.S. Cougar 6x6. It emerged from the operational need to protect troops against mines, improvised explosive devices, and ambush threats in Iraq and Afghanistan. The British Army describes Mastiff as a heavily armoured 6x6 vehicle carrying eight troops plus two crew, with UK-specific communications, electronic countermeasures, and armor integration. Its development was driven by urgent battlefield protection requirements rather than traditional long-cycle vehicle procurement.




