ADF in Europe

Are ADF's required outside of the United States?

I had a demo flight in a new Mooney Ovation2GX the other day. Quite a nice
airplane, by the way. Afterwards, looking at the price list, I noted an
ADF add-on for the Garmin G1000 panel as $15,500 (it's a Becker ADF, for
those who are interested; supposed to be accurate to 3° at some specified
signal strength).

Since the technology seems to be becoming outdated in the US, I wondered if
it was required elsewhere.

Thanks.
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)