Hello everybody...
our project is in the startfase. We are looking for a suitable platform to build on. So far we come to the following wishes:

-Size (lxbxh)=approx 6.2x2.2x3.2
-Weight up to 6 t.
-Serviceable in the world

A main concern we have is the new emission rules in Europe. These new engines are all Euro6 (engine+adblue).

Does anyone have experience with an euro6 + adblue in the high Andes mountains and what would go wrong with the poor diesel quality in some regions in the world and an Euro6 engine?

Happy Travels
Mark

If your travelling outside europe, forget euro 6 or even 5.
Go for an older vehicle in good condition or have it rebuilt. The diesel you get in developing countries will destroy a modern engine, the electronics are too complex and likely to fail whilst being very difficult to fix. Modern vehicles are entirely unsuitable for expedition work.

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1990 Landcruiser H60. Full rebuild completed 2014

If you want something that can be serviced anywhere in the world .. it has to be fixable with a hammer, not a computer. Other than that .. you want a local dealer who is prepared to send you parts anywhere in the world .. arrange that before you leave. Do realise that shipping the parts is only one part of the problem, you need to be able to identify the parts you need, be able to fit them, pay the import duties to the place your in and wait for the parts to arrive .. delays in shipping can be long particularly in the receiving country.

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The world is a large place. Shipping your vehicle will be required to get to various places .. the size of the vehicle should be small .. if possible to fit inside a container .. even a 'high' container... with some clearance ... shipping a standard container is much easier and less expensive than some odd shape vehicle...
http://www.sjonescontainers.co.uk/co...dimensions.asp

Door entry dimensions - standard 2.33 width 2.28 height ... HIGH 2.35 width 2.58 height

length - internal standard 5.09 ... long (and HIGH) 12.01 (all in metres)

Ideally you would like to loose
1.3 metre in length (say 1.2 minimum)
1 metre in height (say 0.9 minimum) ... that would save you a lot in shipping costs .. assuming you will be shipping.

Do plan a way of getting out when it is inside the container!

I'm not entirely disagreeing with the above but these things depend on your perspective, and knowledge base.
I think this guy comes from a aircraft background so is obviously not phased by electronic control systems.
Although I've not read the blog in detail I think the only issues they've had are mechanical.

Choosing the Truck | Tucks' Travels in a Truck

Would I worry about a Euro 6 engine? Absolutely

Ours is euro 4 and I've attempted to remove some potential future problems and I'm doing my best to self teach myself OBD speak. I'll need to self diagnose any issues. But then again the same applies to any mechanical issues. Don't trust anyone. First world included.

I agree ... mostly.
The problem is .. where the breakdown occurs the locals will not know about your vehicle (bicycle, motorcycle, car, 4WD, truck) .. so you will be the 'expert' on it ... and need to find the problem. Most people can figure out mechanical things they can see through observation and thought. Electrical/electronic things require test equipment to 'see' what is going on.. it is another skill set that most have not developed.

The more you know about your vehicle the better ... even if you have a great mechanic who knows your vehicle well, you can communicate better with them.

That's why I've got a semi decent scanner that will also do real time logging.
Not the full blown Merc. one they're allegedly £30K
Chinese clones are £600 ish.
Everything is a compromise. Old tech and spend gazzilions on rebuilding it but then if you do that yourself or get deeply involved in it you're then an expert on your vehicle, or go new or new (ish) and despite the nay sayers modern vehicles are generally more reliable than thier predecessors. I'd always want to be the "expert" on my vehicle though.
Don't get me wrong I'm not suggesting I'd be happy with, say a brand new LR Range Rover. They're SUV toys. But there are some out there, such as the Iveco in the link above I would trust.