There is the stupid marketing wording .
"Approved" has had samples submitted to VW for approval .
Huge £ fees to do this , thus oil is then marketed at the upper end .
Cheapest is usually VW's own brand Quantum LongLife III £26 5L .
Others are Shell Helix Ultra Professional , Mobil 1 ESP Formula , Fuchs GT1 Pro C-3 XTL , Castrol Edge , Motul Specific , etc .
"Meets or exceeds" is not approved oil , it's recommended by the seller as meeting the requirements of , it's a financial profit desicion as profits aren't absorbed by the huge submission test fee .
Cheapest is Asda when on roll back
£19 5L .
Anyone can call a product suitable for certain specs , to assess quality and protect us is VLS
http://www.ukla-vls.org.uk