An SUT derivative of the six wheel drive Mercedes Geländewagen developed for the Australian Army from 2007 (see G-Class Military operators), at the time it was the company's largest and second most expensive street-legal offroad vehicle.

[1] It combines the engine from the G63, a twin-turbo V-8, with 6x6 portal axles, a pick-up version of the G-Class body, and a luxury interior.

The vehicle has five electronic differential locks, which can deliver 100% lockup of all six wheels, operated by three switches on the dashboard.

The G63 AMG 6x6 features an air compressor which allows it to reduce or increase tyre pressure in order to adapt the traction to the driving surface, especially in desert-like environments.

[citation needed] A wealthy South African businessman wanted to purchase a 6x6, but Brabus was only willing to fulfil the request to convert it to right hand drive if he had a larger order.