Who knows a reliable car mechanic in the cork area (for a fiesta)

As in Cork, Ireland?

yup, and south cork if possible…

Well the only place I can really recommend is Roches Garage. That’s in Carrigtwohill, East Cork. Wildflower might be able to advise you better perhaps. I can’t speak highly enough about Christy in Roches Garage though.

Another example of how fluther never ceases to amaze me.

I’ve used Lee Garage on South Terrace. They’re pretty good, but you may need to push a little to get the deal they originally indicated you’d get…
I’ve also used Kerry Quinn in Hollyhill (I know, I know, do you dare bring your car up there…) who was fast, realiable and excellent value for money!