Porsche R&D Boss Wolfgang Hatz Resigns Amid Dieselgate Investigation By Jason Siu May 03 2016 Share this Article Tweet Porsche’s head of research and development has resigned as a result of the ongoing dieselgate investigation. Continue Reading... Filed under: Featured Articles German Porsche VolkswagenTags: dieselgate diesel scandal, Porsche, TDI, Volkswagen, vw, wolfgang hatz