Configuration Management (CM) with its aim to ensure functional and physical consistency between the product requirements and the reality during the whole lifecycle is becoming more and more important, since the awareness of the resulting advantages rises in many companies. The Institute for Information Management in Engineering at Karlsruhe Institute of Technology has developed a maturity model to evaluate the CM maturity for different organizations on the basis of different CM dimensions. The following paper enhances the capability of this model by developing performance indicators, which are aimed at measuring the quality of implemented CM activities as a supplement to their extent of application, which was measured before. Such indicators have been developed based on an extensive state-of-the-art analysis and were validated and refurbished through interviews with industrial experts.