While you should get the Sync Services free initially (don't know if it's still up to three years), read all the reviews before you shell out the $60 per year for it.
Read the reviews in the app store.
Common complaints will include limiting the Sync Services to 1 phone number (very difficult/near impossible to practically share one account with a spouse or kids) and the mobile app will not work if the phone is moving (passengers can't load destination into navigation while vehicle is moving).