The build quality is exquisite, and with its twin-turbo six-litre W12 engine producing 600hp it is more powerful than any other SUV. It is uncannily quiet and accomplished off road, as we found on deep, shifting sands in the Californian desert at the car’s launch. So this is a beautifully made, powerful, well-equipped, easy-to-drive car, which can go just about anywhere and is not unreasonably priced. So what’s the downside?