The US manual says that if the car has filtration, it must use 507 00. I'm sticking with 5W-30 507 00 then. 5W-40 is probably just a typo.
Thanks for posting the "EXACT" page that probably compelled you to post in the first place. When I bought my 03 TDI (in 03) (while the gobbity goop was slightly different) it was still AS confusing. That actually motivated me to go to a local GTG to ask those questions. What are the "correct" oils and probably more importantly logic behind,...WHY? Indeed VW has never sent any clarifications, going on 8 MY's. Now I have the Bentley's and do get the periodic updates, etc.. At first I thought it was probably bad translation, technical vs writing, etc.
So (to me anyway) what they are REALLY talking about is; the OEM factory oil fill. So DEFACTO, that oem factory fill (in which case VW indicates a "specialized 5w40") was used. Given the first 10,000 miles OCI (included in the price); that oem oil fill will be drained and replaced with VW 507.00 5w30 (hopefully the dealer will used the correct oil.) Dutifully, you followed the instruction and bought the correct replacement oil (Castrol SLX LL03 gold bottle 5w30 VW 507) in case you needed to TOP the oem filled 5w40, during this period.
So yes, VW 507.00 5w30 is what the manual is referring. Of course, you do have the DPF?
So (more down the decision tree line) more on an option/ and LOGIC progression discussion using the provided decision tree, and in line with Drivbiwire's recommendation of 5w40, you CAN use a 5w40 (sans DPF, albeit VW 505.01 which IS a 5w40 viscosity !!!!! However, VW 505.01 is NOT low saps. It should now be apparent Mobil One MB 229.51 5w40 IS low SAPS !!!! The warranty issue will now be that VW 507 5w30 is the recommendation, while after warranty MB 229.51 5w40 will work and just wonderfully as it is both low saps and 5w40 but not VW 507.00 specificationed.
I am sure this is all getting clearer as MUD.