I suggest you go to www honestjohn co uk.
There are plenty there who know the key faults with turbo diesels.
1. Valve problems on pumps
Typically the pump is rebuildable - eg, via Delphi agents.
This is particularly true if the engine is shared with Mazda.
2. Oil circulation problems
Might affect several makes of car - big end (rod) spins.
Mobil engineers stated oil would no longer be able to cope with the carbon loading after about 2004, it was beyond the ability of even synthetic. That said I suspect synthetic OR changing MUCH more frequently would help.
Some engines spin the big end, others suffer top end problems - common rail diesel are not as reliable as their previous generation. They are still in the "new R&D stage" with you being the field test.
3. ECU increasingly sealed
In the past ECU were just thro-hole, then surface mount parts.
More recently dirty tricks like conformance coating (making it unrepairable) or even epoxy encapsulation have been used.
Thus the ECU is not only not-repairable, but may be fantasy land in price.
4. Warranty is everything, some cars are get rid of quickly out of warranty.
Some older diesels are often more reliable in terms of lifetime cost.
Indeed for certain cars the petrol has lifetime cost & risk lower than turbo diesel.
A CR diesel blowup can cost you 5-8k, as you just found a new pump is into the 4 figures similarly. Hopefully it is rebuildable for a fraction of that (I think figures of 140-350 or 450 fitted are more typical).
Do check the above website, forums/discussion, technical and post/read.
