Judgment of the Court (Grand Chamber) of 14 July 2022.#GSMB Invest GmbH & Co. KG v Auto Krainer GesmbH.#Request for a preliminary ruling from the Landesgericht Klagenfurt.#Reference for a preliminary ruling – Approximation of laws – Regulation (EC) No 715/2007 – Approval of motor vehicles – Article 3(10) – Article 5(1) and (2) – Defeat device – Motor vehicles – Diesel engines – Pollutant emissions – Emission control system – Software installed in the electronic engine controller – Exhaust gas recirculation valve (EGR valve) – Reduction in nitrogen oxide (NOx) emissions limited by a ‘temperature window’ – Prohibition on the use of defeat devices that reduce the effectiveness of emission control systems – Article 5(2)(a) – Exception to that prohibition.#Case C-128/20.