Hi. I have owned my 2018 GLC 43 for almost 2 years - just clocked 53000km. I bought the car second hand from an MB dealer as a Certified Vehicle and have complied with service requirements via a MB dealership to maintain the warrantee. Today the car had its 4A service, however, during the day I was contacted by the MB dealer performing the service to explain that the front differential seal was leaking significantly and needed replacing - surprising for a car just 4 years old! I was told that MB Certified warranty does not cover front axle seal issues but strangely covers real axle seal problems. The fix is around $1000 and will take around 2 days to complete. Has anyone had a similar issue with the Certified Vehicle warranty and front diff seals?