Industry 4.0 is one of the most frequently used term - in context to improved productivity, flexibility and securing the standard of living in Germany and Europe. In spite of the various initiatives that primarily focus on the formulation of the technical requirements, there is currently no common understanding in terms of content and implementation. With the goal to estimate the degree of implementation and define future potential projects, this article defines a comprehensive and pragmatic rating system. Based on industrial studies and individual professional experiences, various criteria are captured and used. There are already two use case demonstrations in real industrial applications.