The Federal Constitutional Court has not accepted complaints about the diesel driving ban in Stuttgart for the decision. Overall, there have been nine constitutional complaints against the driving restrictions for diesel vehicles below the standard Euro 5 / V, it said in a press release of the court. The applications were directed against resolutions of the Administrative Court of Baden-Württemberg and the Administrative Court of Stuttgart.

According to the judges, the complaints are not a case for the Constitutional Court. The decision was not substantiated. Since the beginning of the year, there has been a driving ban in the environmental zone for vehicles with emission standards Euro 4 or older in Stuttgart. A bann for Euro 5 vehicles plans the black-green state government from 2020. This will apply to four main lines. The Administrative Court had ruled, however, that the excessively high nitrogen oxide levels in Stuttgart only fall sufficiently due to a driving ban in the entire environmental zone.

Stuttgart was the first German city to impose a diesel ban that went beyond individual roads. In cities such as Frankfurt am Main and Cologne, courts had also called for the introduction of driving bans, but the respective state governments appealed. Many of these cases were not finalized. Original plaintiff was in most cases the German environmental aid, which had also obtained the future driving bans for Euro 5 diesel in Stuttgart.

Stuttgart had a nitrogen oxide value of 71 micrograms per cubic meter in 2018, making it the most heavily polluted air of all German cities. The EU limit is 40 micrograms per cubic meter of air. The driving bans in several German cities were a consequence of the diesel scandal, in the course of which it became known that many automakers in diesel vehicles reported much lower exhaust emissions than they actually expel.