This is the lunatic six-wheel Mercedes G 63 AMG 6x6, the largest and most extreme road legal SUV to ever hail from Mercedes' road car operations.
This plush, leather-lined civilian version of the off-road vehicle has been conceived to appeal to some of Mercedes-Benz's most affluent clientele, and promises a vehicle without compromise, which is what we are in Dubai to find out.
It features six driven wheels, low range gearing, five differential locks and a tyre control system for its standard 37-inch wheels. Mercedes says it is "the last word in forward-thrusting power for the beaten track".
Unlike the military version of the G 320 CDI 6x6, which is fitted with Mercedes-Benz's 3.0-litre V6 diesel and is offered in outputs of up to 220bhp, the G 63 AMG 6x6 gets a twin-turbocharged 5.5-litre V8 from AMG with 536bhp. Torque is a 560lb ft – crucial in providing the shove required to haul the big four-seater’s considerable 3775kg kerb weight.
Mercedes' 7G-tronic seven-speed automatic transmission is fitted in place of the old NAG1 five-speed auto 'box found on the army version. Its transfer case can alter between a 0.87:1 high-range ratio for on-road driving and 2.16:1 low-range ratio for off-road conditions to all six wheels in a nominal 30:40:30 split. Power for the rearmost axle is supplied by an extra shaft. There are five electronic differential locks offering 100 per cent lock up of all six wheels, operated by three switches on the dashboard.