I had an old '82 Metro 1.3
S (the "S" was important!
) when I passed my test about 8 years ago, and it attracted rust like cow poo attracts flies. I lost count of the number of tins of P40 fibreglass, P38 filler and spraycans of "Champagne" paint i used on that car (how Austin could call dishwater beige "Champagne" I do not know!). The bits that were especially bad were the front valance, the front wing around the line of the headlight mount, and the bottom of the doors. Generally though, you name a place on the car, and you could bet it'd be rusty...front wings, rear wheel arches, front valance, bottom of the doors, fuel filler cap etc etc etc. I think the only reason the floor and engine bay didn't rust out too much on mine was cos there was so much oil leaking out of the gearbox selector oil seal and assorted other engine gaskets, that a nice protective coating of oil had developed on most of the underside of the car!!
Chris