You are talking about locking the doors automatically when driving >20kmh, aren't you?
Yes exactly that function. I know that it is available on the US market so it bothers me a lot that Mazda does not show it on the EU models. Makes no sense to me. And as I'm used to it from my BMW I kinda miss it in the MX-5.
Unfortunately I don't have access to any other Mazda cars but maybe it would help if I send you values of my car?