My brother is service manager for an idependant garage that deals with a fair amount of landies, as we are out in the sticks.
He sees some troubles, but no more than any other vehicles, the main difference is the ease and cheapness of after market spares.
I reversed my defender into a tree
and broke 2 lights on the back. I went on fleabay and picked up 2 new complete lenses and holders for 4 quid each. Try getting lenses for jap crap that cheap!
Also managed to drive over a big tree stump, and ended up needing 2 new steering arms, bought aftermarket heavy duty ones, and paid 110 quid for the pair!
there are loads of companies doing aftermarket parts which are as good if not better than OEM parts.
Had my defender 3 years now, and never broken down yet (apart from what i have managed to break of roading!)
I used to have a daihatsu petrol 4x4, the distributer went and was quoted 350quid, part ex, recon part with 6 weeks waiting time, Hmmmmmm really good service from them NOT!
So you can keep your jap crap, and korean crap.