I've seen this on pistonheads for sale http://www.pistonheads.co.uk/sales/3581929.htm

I'm selling my Focus on ebay (not giving further info in case am accused of advertising) and was wanting something with good mpg but still quite quick. A pal was saying Astras like this one should be able to get about 35mpg mixed driving, maybe 40 on a run. Seems a bit optomistic to me but has anyone had a similar car can comment on fuel economy on these.