Hi all , well I am about to become a first Mercedes owner my 2008 ml320 is being prepped ready for me to collect in next few days. Is there any know issues or problems to look out for, any recommendations for upgrades etc. I have looked at posts regarding command nav as car only has 6 cd/ radio but has Bluetooth telephone , so might just stick with plug in sat nav unless anyone can convince me to upgrade. so any thoughts help or info on ml please let me know thanks