I have one as the base model on my motorhome, and the only bits to go wrong with it are on the ford side of things,
Egr unit has been replaced
Diesel leak
Sump leak
Electric windows not working properly
Fuse blown (cant remember why)
Black smoke from exhaust, fixed twice.
All above fixed under warranty during the first 3 years,
Now its 3.5 years old and the Egr unit has went again, so thats £335 thanks very much

The unit was replaced 1.5 years ago, and appears to be a common fault, as is all the faults listed here.
32000 miles, it just aint good enough. hopefully thats it for this year