The Kraftfahrt-Bundesamt (KBA), also known as the German Transport Ministry, will be conducting a new emissions investigation following its findings from Fiat and Opel. According to Automotive News Europe (ANE), the agency will be retesting 30 cars that exhibited “high levels of CO2 emissions” during its tests.

"Out of 53 cars tested for illegal software, 30 were showing inexplicably high CO2 emissions. The experts are now looking into this," said a representative from the German Transport Ministry to ANE. The Ministry began testing cars after the wake of the Volkswagen “Dieselgate” scandal wherein the German automaker fitted a defeat device that shut off the vehicle's emission control systems after 23 minutes. A few of the manufacturers tested by KBA included Volkswagen Group brands, Ford, Opel, BMW, Mercedes-Benz, Fiat, Renault, Peugeot and Toyota.

Last week, KBA called out Opel and Fiat when they reportedly found defeat devices in their respective vehicles. The two automakers were asked to appear before a German council to explain high levels of emissions from the Opel Zafira and Fiat 500X. During the meeting, Opel admitted that they did install the said device in their minivan and the automaker is now helping in the investigation. Fiat on the other hand did not attend the meeting. The KBA did not mention the cars it will be retesting.