Judgment of the Court (Seventh Chamber) of 3 June 2021.#European Commission v Federal Republic of Germany.#Failure of a Member State to fulfil obligations – Environment – Directive 2008/50/EC – Ambient air quality – Article 13(1) and Annex XI – Systematic and constant exceedance of the limit values for nitrogen dioxide (NO2) in certain zones and agglomerations of Germany – Article 23(1) – Annex XV – Exceedance period to be ‘as short as possible’ – Appropriate measures.#Case C-635/18.