Most of the posters here are saying that their transmissions are made in Germany:
formatting link
formatting link
I think it's beyond question that Mercedes transmissions are going into some 300 models - mostly SRT's but until I see other wise maybe also 300's with V8's and/or AWD.
Some claim to have "made in germany" tags on suspension parts, and that cruise control comes straight from Merc parts bin.
And until I read otherwise I'm going to assume that Daimler is getting a cut for anything being made that has some Daimler / Mercedes IP (intellectual property) content even if it's being made in a North American or Asian parts plant. That includes some "Mercedes-inspired" transmissions made in Kokomo.