My understanding is that OnStar is a big selling point for GM.I wish I could get it.The airbag deployment notification alone would be worth the price,IMO.
The OnStar telephone audio is noisy unless one makes a call while stopped; a cell phone is better (if you are within a cell). You have to ask yourself if the airbag deployment notification is worth $203 per year. What are your chances of having an accident without anyone around to call 911?