I believe you're referring to "Vag Index"!

Each parameter is scored on a scale of 0-4, with 4 indicating a normal or healthy state. The scores are then combined to give a total Vag Index score ranging from 0 to 20.

While the spelling varies across forums, the concept is the gold standard for European car enthusiasts. Here is everything you need to know about navigating the VAG ecosystem.

The Vag Index score is often calculated based on a set of criteria, which may include:

: The software is typically sold with different license tiers, including versions like which receive frequent updates.