Toyota Hilux or Mitsubishi L200

I am thinking of buying a pick up, to work in the field and I am doubting between these two, especially in consumption, the new ones if they have told me that the Hilux consumes less, but of previous models 2000-2008 I do not know how things will walk.

Another doubt is the consumption of the Nissan Navara the first ones who went on the market.

All vehicles, either by wear and for some piece that breaks over time consume more. I say it in case you plan to buy second hand.

And if the truck has 2,000 cc or a 2,500 cc better the largest engine because when you go less forced it consumes less, as long as you do not step on the accelerator pedal .
Of all the vans that you said that the pieces are cheaper.