No, you cannot buy a German "vignette" online for passenger cars because Germany does not use a vignette system for standard automobiles as of 2026. Unlike neighboring countries like Austria, Switzerland, or the Czech Republic, the German Autobahn remains free to use for private cars and light vehicles under 3.5 tonnes. However, there is a common point of confusion: Germany does require an Environmental Badge (Umweltplakette) to enter "Green Zones" in over 80 city centers like Berlin, Munich, and Cologne. This badge can and should be ordered online in advance if you are driving a foreign-registered vehicle, as it requires a scan of your vehicle registration to determine the emission class. For heavy goods vehicles (trucks over 3.5 tonnes), there is a distance-based toll system called Toll Collect, which is managed digitally via on-board units or a mobile app. So, while you don't need a sticker for the highway, you likely need a digital or physical "Umweltplakette" sticker if you plan to drive into the heart of a major German city.