With ad blue I would be careful, MB is famous about faulty ad blue sensor. Kid you know the replacement of that thing (£80 the sensor from 3rd party) cost £1800 from MB garage. Robbery!I have adblue in mine too so I’m always checking the levels it’s not rocket science our cars literally tell us everything for a safe journey but she drives 2 hours a day boohoo ffs most of my day is bliddy driving about all over, the point of a car Vag is to be driven