It comes standard for 4 years (no cost).
To enhance your BMW driving experience, the BMW Assist™ system offers safety, security and convenience services at the touch of a button. Using advanced technology, BMW Assist™ connects you with a trained response specialist to help you with almost everything, from an emergency situation to directions and traffic information. The BMW Assist™ system includes Bluetooth® hands-free calling capability with speech recognition. For 2007 and later models, the BMW Assist™ Safety Plan is available as part of Ultimate Service at no cost for 4 years from your BMW's in-service date.
http://www.bmwusa.com/Standard/Conte...t/Default.aspx