Known from film radio and television from today it is time to start the official sale of the pollutant badges. These are available from TÜV, Dekra, GTÜ, the registration offices and I believe also the recognized AU test workshops. To avoid any nasty surprises, you should perhaps check before how you are classified. For example the page of the GTÜ with the key numbers: http://www.gtue.de/sixcms/media.php/392/table_gradation.jpg