to be fair not many manufactures make a decent diesel any more, IMO they;ve tried to over complicate something that doesnt need to be over complicated.....its a works van at the end of the day!
take the vivaro for example; it has air con, 6 speed, sat nav etc.....its just more things that can go wrong...they cant even get the mechanical things right such as the shite gearboxes
go for a transit; proven and quality, although the later ones do seem to suffer from diesel pump problems