The study focuses on the functions, evolution and the main features of German and Italian sustainability reports. It explores reports published by major German and Italian car pro- ducers and energy companies (VW, Fiat, E.ON, Enel). The analysis is based on the “Holistic Model of Diacronic and Contrastive Textology”, which presents a further development of the Holistic Model of Contrastive Textology, previously developed and applied to various texts of corporate communication.