Would have to be PP, but my data shows at least one person with a confirmed BW of 24, and the PP!
I think he is talking crap (the VW man, not matchboy). With all the data I've gathered I'm really beginning to think it is just random. Problem is there are two factors and either or both could be random. Its either the actual build planning, or their communication of that to us, or both...
BTW: re Sunroof + 19inch
Someone who asked about this said it had to do with putting the emissions over a threshold and into the next tax band. If true that would fit with why it affects different countries differently. To be honest I don't believe the theory about weight. How much heavier can the 19inch wheels be vs the 18inch ones? Enough to hit some kind of limit? I don't think so.
I do wonder whether you get a variable response from VW UK depending upon who you speak to - whether someone guesses build week by the date you tell them you ordered, or by the order number provided rather than finding out for sure. My enquiries led me to be put on hold for a good 5 mins whilst the lass on the phone found out. Her answers seemed accurate for my dad's car and if i'm on the tracker towards the end of the week would hold true for me too. My dealer on the other hand seems to agree with VW UK on week 26 for me, but thinks my dad's is doing BW27 and not 25.
If you ring up VW UK and someone gives you an answer straight away without putting you on hold to find out then they've probably made an educated guess based on your order number.
As for the 19" wheels/sunroof combi - maybe the sunroof is a bigger contributor to weight than the wheel upgrade? VW have never been able to tell me why a manual GTD is same CO2 rating in 3 or 5 door, but a 5door DSG GTD is a whole 3g CO2 more than the 3 door DSG GTD, putting it into a whole new tax band. Unless they can tune a 5 door manual to be a bit leaner to counteract the CO2 implications for slightly higher weight for 5 door over 3 door I can't see how they would have the same output.
But if a similar situation occurred with the sunroof/19" wheels and someone was prepared to be in a higher tax disc band for the combo then why stop them? Weird.