Just as an update, I recently got a good deal on the Halfords all seasons car cover in size xs. The dimensions given are actually slighter smaller in width than the Lupo but it fits almost perfectly - with perhaps just a slight slight edge of one sill exposed.
So far, so good, it arrived just in time for some very wet and stormy nights in early September, has not left the car as it hugs the front and rear ends quite nicely, and hasn’t let any rain into my porous car, which is nice.
Only question is longevity but it came with a 2 year warranty and lots of reviewers claim Halfords swap them out with no fuss at any point during the period.
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