You would need to read your bylaws to see if they have broken any of them but from the standard bylaws their is this:
17. Appearance of lot
Unless an owner or occupier has the written permission of the owners corporation, they must not keep anything within their lot that is not in keeping with the appearance of the rest of the building.
So if this wreck is an eye sore visible from the common area you could ask the tenant to do something about it.