what to bear in mind is that the body has to come off for major repairs...
its also easier to change the turbo with body off...engines can sometimes grenade-so you find yourself looking for an old or hit s type diesel to rob the engine from
the later oil pump bodies where the timing belt tensioner bolts on are prone to busting off-just after a belt change with the increased tension[after 2006]
in a lot of ways the pre 06 cars are better-you can blank off both the egrs without it throwing up a light-the oil pump body is stronger,and its cheap to tax-all engines sound crap-a lot better with a wee bit of two stroke in the fuel though

as before-bushes[and the bolts seize] look out for transmission judder on autos,air pumps,rust-they rust for fun underneath-and electrical gremlins
i dont do a milage that helps fuel consumption-but i got around 28mpg
great things to drive though,with seats etc down its like a big van
avoid manual-short clutch life and ruins the refinement
read up about them on the disco forums-they aint the most reliable thing on the planet,its not if they will go wrong its when

that said -i like them and would have another if i needed a 4x4