I Purchased the MB4.0 and added vw and…
I Purchased the MB4.0 and added vw and Porsche as the other 2 vehicles. The unit works great and immediately showed me 2 failures in my car that did not trigger a check engine light and i was not even aware of the faults. Was able to fix and it cleared both faults . As for the VW and Porsche i did not have a chance to use them yet but i am sure it will act like it did on my Benz. Nice unit, I will definitely recommend and buy again. Delivery of the unit was a little slow after purchase but well worth the wait.