There will be horror stories around for all brands but what generally causes a lot of problems later in its life is how it's been looked after. If you thrash your van it won't last long, but don't blame the manufacturer. Make sure you regularly service it when required and keep checking fluid levels every couple of months. This will help prevent most problems from happening.
i think the most relible van ever made was the toyota hiace now they were hard as nails and a bit more the the 2.5 and the 3.0 were the ones to get having said that the dispatch with the 2.0l hdi was a cracking engine powerfull prity good on fuel to , i also liked the old transit with the 2.5d bannah engine not good on fuel but relible and cheep to fix and easy to work on deisels these days are to complacateded if u ask me
I wouldn't. I'm finished with VW's now.