I discussed this with both editors when I had my S1 in FF and CF a couple of years back. There was no 25 year rule in existence and the decision on which cars to include was purely down to the editorial team and in their opinions which cars would help sell their magazines to their readers.

When the CF issue came out I was especially disappointed to see my S1 cut from the group shot used on the cover. CF is most certainly aimed at the older models and in general it's readers don't like cars with plastic (arches, bumpers etc).

Wish I still had that car but after 25 years of ownership it was time to move on.

Cheers, John
RSOC S1 Turbo Registrar

PS. Maybe Dan will confirm or otherwise.