The 2.5 is a good strong lump, the same as the VM RR engine, its fly by wire, most problems seem to be number one injector going west and causing limp home mode, I think its a couple of hundred quid to fix.
The V6 is 210hp so more powerful than the RR V8

they have some issues with leaking manifold gaskets and coil packs but nothing to horrendous unless you need a new exhaust
2.2DTI is more refined and very strong, the main issue as mentioned is the fuel pump but this only dies if you let it run out of fuel, just one turn of the key with no fuel and its bye bye pumo and £600 plus, they can also suffer some EGR issues.
2.8tdi, well solid strong really basic, but pretty unrefined, but I like that in the car.
20swb easy to work on simple Cav engine, not the most powerful but I loved my old one, did everything I wanted and more.
Even changing an engine can be done in less than an afternoon and there are plenty about.
2.2 petrol, un abused and looked after they are nippy beasts and go well, just look out for that lower end knocking.
2.4 older now but good solid and reliable and same lower block as the 2.3d
2.3d as above old now and higher mileage, they wont beat any land speed records but will pull for ever with basic maintenance.
And the gearboxes all Isuzu are solid and take a heck of a lot of abuse, not to many horror stories on that front.
A quick flit over the engines from me
