I still haven't been able to get a definitive answer on this unfortunately
The service intervals in the service book gives different information to that of the information within the documents on erWin. The book says for an oil change service -
QI4 = After 15,000 km / 10,000 miles or 1 year whichever comes first
QI7 = After 10,000 miles or 1 year whichever comes first
The book says for an inspection service -
QI4 = First service after 2 years or 30,000 km / 20,000 miles whichever comes first then every 1 year or 30,000 km / 20,000 miles whichever comes first
QI7 = First service after 2 years or 30,000 km / 20,000 miles whichever comes first then every 1 year or 30,000 km / 20,000 miles whichever comes first
Here is a picture from my service book
So, according to the service book there is no difference to the oil change or inspection intervals when comparing QI4 and QI7. If there is no difference between them and they follow exactly the same intervals why do both exist? There is a difference between them in the erWin documents. So which is it Volkswagen? It can't be both... I hate conflicting information, especially official conflicting information