They are indeed diecast, of course, but on the Aston it seems like a 3/4 open... the protos had no trunk and received a beating for this.
No idea if they change something.

Also, the engines are just pseudo-3D parts as in UT, Norev or Touring models.
No see-through engine bays.

I am not overly excited about these.
But no verdict before any product is available.

https://diecastsociety.com/first-sample-stirling-scale-aston-martin-v8-vantage/