Whilst auto stop/go (ASG) is not offered in Australia I do use the Auto Hold function regularly when driving in heavy stop/start traffic. On the occasions when I don't use it I find hill assist does work but prefer the Auto Hold. I just wish it was possible to enable it all the time and have it persist rather than disengaging every time the park brake is activated. I would surmise the hill assist would kick in when you stop and the ASG would kick in once you apply a harder braking force. Try a few test stops on a quiet street with a slope to get comfortable with the activation process and progress to steeper slopes as you become confident in its activation process.When start/stop is enabled does hill assist work?