Humm, that says a lot about the Cupra/Boca engines, it is in my S4 - (supercharged 3.0V6 TSI) that the 0-30 was dumped into. Anyway, as lots of people will know, what the
service/parts areas have on show and sell in one litre containers need not bear any resemblance to what Audi/VW/Seat/Skoda are currently saying what should be used in the
service departments as they really do need to move on any old stock they have.
On that "what oil?" subject, I bought my wife a new 1.2TSI 110PS Polo a few weeks ago, meant to ask salesman what oil it is meant to use, but thought I'd get told anything, so I looked in the operating manual, nothing much in there as to "weight" of oil, saw the parts place still have stocks of 5W-30 to move so did not bother taking it any further!
So, it looks like in general, the oil "weight" advice has gone out the window as far as VW is concerned, the current thinking is "thin" is good for engine + environment + MPG, I just hope that someone has done a lot of work proving that.