Hi
Only just seen this reply, been busy. In response to your question ' what did I do in the end?'
I waited 6 months, then went back to VW dealer, as all the old staff had been sacked, New franchise in, and it was all new unaware of issue Staff.
New service department, new sales staff, new mechanics.
Also my van, for some reason wasn't recognised on their system ? Very strange ?
So I kept very quiet and traded it in with them for an ex demo T6.1, a 150bhp and defo not a 204bhp twin turbo.
They didn't even check it, apart from a 1 minute walk round without even turning engine over ?
To respond to the question, are all 204bhp engines affected or just 16/17 plates ?
The old service manager at VW told me privately before he left to - STAY AWAY FROM ALL 204BHP TWIN TURBO ENGINE VW TRANSPORTERS !!! EVEN NEW T6.1 MODELS.
Keep to the 150bhp.
So for anyone thinking of buying a new T6.1 204bhp twin turbo - DON'T !!
PS. Eventually the fuel injectors and fuel heat pumped block and go into fault, as mine did the week I traded it in with VW, that's another 3k cost for parts and labour. JOKE.