From January 2008 all vehicles must bear a windscreen sticker in order to enter Low Emissions Zones or "Umwelt Zones" in Berlin, Cologne and Hanover, with other German cities following this example in due course.
- Euro 0 and 1 vehicles are not eligible for stickers and do not comply with low emissions requirements and are not allowed to enter the Low Emissions Zones
- Euro 2 vehicles have red stickers and currently do comply
- Euro 3 vehicles have yellow stickers and do comply
- Euro 4 and 5 vehicles have green stickers and do comply
For a 10 Euro fee stickers can be obtained from local licensing offices or other competent bodies designated under Länder Law; certain garages that carry out exhaust smoke tests and agencies such as Dekra and TÜV either within Germany or their overseas offices. It is possible to order stickers prior to a trip by submitting Registration Documents via fax or e-mail (as a scanned document) or as a copy by post. The sticker will then be forwarded by post but postage costs will have to be paid on top of the cost of the sticker. As the UK Registration Document does not identify the emissions standard for vehicles, the date of first registration is used as a basis for classification, rather than the engine number.