You do get difflock on the Amarok as an optional extra and I suppose lot of bucks extra.
To me all wheel drive is a waste, more expensive on fuel, works fantastic in the rain,(doesn't rain every day) and eats up tyres on tar roads.
My Suzi is very popular overseas in countries with lots of snow.
Will let you know what it does when it snow in Polokwane😂😂😂😂😂
I had a discussion witha 4x4 instructor about this and he informed me that the all wheel drive only "grips" when the vehicle slips. According to the instructor, all wheel drive is only for non slip purposes and not for off-road.
I think first of all you have to use any tool for the purpose it was intended for. In this vein an AWD was not designed as a 4X4 and if you try and use it as such, you are going to break it. The lack of low range is one of the most limiting factors in an AWD which makes it unsuitable to for instance climb rocks. On the other hand, if the sandy terrain is such that the AWD can travel without having to slip tyhe clutch in say 1st gear, it is no less capable than a real 4X4 and probably even more so as they tend to be lighter. Some of the real 4X4's actually use similiar systems as an AWD instead of diff locks on wheels. But they are not made to do this much as they are at most gravel roaders.
One must remember AWD was actually created to provide exceptional roadholding capability and making use of this for light off road work is just a side benefit, not the purpose of the system.
As for the durability of small engines, I think you can today create materials, especially metal, to be as durable as you need it to be. I do not ascribe to the theory that a bigger engine labours less than a smaller engine with the same output. The smaller engine probably has more strenght where it is needed because it is designed to handle it.