: Model Driven Software Development (MDSD) has matured over the last few years and is now becoming an established technology. One advantage that is promoted by the MDSD community is the improved maintainability during the systems evolution over conventional development approaches. Compared to code-based development (meta-)models and transformations need to be handled differently when it comes to maintainability assessments. However, a comprehensive analysis of the impact of the model-driven development approach on the maintainability of a software system is still lacking. This paper presents work towards the finding of appropriate approaches and metrics for measuring the maintainability and evolution capabilities of artefacts within model-driven environments. We present our first steps and further ideas on how to tackle this problem.