Worth noting that VW505.01 - 5w 40 and 506.01 - 0w 30 have now both been superceded by VW504/507 - 5w 30. Only Seat still use the 505.01 as they don't use the extended service intervals as do VW, Audi. Not sure about Skoda.
If you're undecided then see my previous post.