When is the first oil change due? We've been told three different answers. One service advisor said at 4000 mi., another said one year or 13000 mi. and a third said 10000 mi. Which is it?

Interestingly, when I had my last Mercedes E, it was a 2003 (the same genre as present) and all service was then included. They would not let me have my first oil change until it was at least one year old or 12000 miles.

In the main screen in the instrument cluster it has a counter to tell you when your service is due.
Services are due every 13,000 miles, says Mercedes.
I would due every 10,000 or so but then I do my own.
Dealers would be more then happy to do services every 4-6,000 miles but it is not needed.