Marketed by Mercedes-Benz as "the most spectacular cross-country vehicle of all time," the G63 AMG 6x6 is very much deserving of that title, made even more impressive due to the supreme level of luxury.

With six driven wheels, five lockable differentials and three rigid axles that can operate autonomously to manage the 700 bhp and 708 ft/lbs of torque produced by the AMG-built/BRABUS upgraded 5.5-liter twin-turbocharged V8 engine, its off-road credentials are unparalleled.

A BRABUS tuned-ECU program manages engine performance, enhanced with BRABUS turbocharger units with a larger compressor, and BRABUS Gold Heat reflection sheeting is used on the intakes while new charge-air pipes lower the temperature.

High-performance catalysts were added with 75mm downpipes for lower back pressure to a stainless-steel exhaust with butterfly valves to control the sound of the twin sidepipes.

Measuring in at 93.2 inches tall, 86 inches wide and 231.3 inches long, it dwarfs the standard four-wheel ...