I have a 2016 c300h with a command nav system. I have a problem at large roundabouts as the system does not recognise them as such and just tells me to prepare to turn left even if I need to take the 3rd or 4th exit and therefore I need to be in the right hand lane. The screen is late to show that I am actually needing to turn right and its causing me major grief. I have reported this to MB on several occasions and they always seem to act as if I am the only person who has this issue? Its been to the dealership today and I have the latest map update but the annoying roundabout issue is still there. I had a CLA as a courtesy car and the navigation system in that was perfect, and recognised all roundabouts and displayed and told me which number exit I needed to take. So really frustrating to get back in my c-class and find the system being so vague. I have reported to Mercedes for a third time and have previously been told its a feature of this sat nav. Am I just being difficult or is this a problem that I should be pushing for Mercedes to fix? Help!