Your car looks good in that photo OP, but you might want to add some more detail before you get deluged with questions about when it was serviced, who did the work and at what mileage, is it Manual or Auto, what options does it have (Bi-Xenon headlights, rear parking sensors, cruise control, cup-holders, heated seats, etc.) how many previous owners, is it a Sport or an SE, interior photos and so on.
Most people on here will want that sort of detail, so if you really want to sell it's worth putting in the effort.
Here is an example of what I mean:- https://z4-forum.com/forum/viewtopic.php?f=41&t=126226