Waste of money and time. 75% inquiries are fake, because they are all the same phone number and the number is always unavailable or not interested. Of the remaining 25% buyers are non-serious. Humungous waste of time.
I listed 3 cars on this. Interestingly as soon as I marked 2 of those cars as sold through offline dealer, the 3rd started attracting several inquiries, majority of them from the same phone number.