I like stop start but find it inconsistent in its application. Yes I know it depends on battery charge and temperatures etc. Coming home today 35 miles ambient temperature 16 degrees C, engine temperature 92 degrees and it didnt work when I pulled up at a set of lights. On other occassions when its been not as warm, either outside or the engine, and it has worked. Sometimes it works after only a few miles from start up. Do other members experience the same? I have started recording data now to advise MB when next in for a service unless I take in it before under warranty.