Yep about the same MPG as the Audi. I'm averaging 21mpg with town and A road driving (little or no motorway). If you spend a lot of time on boost you'll be looking at low teens though.
Thanks for all the info, I really would like to get back to Subaru ownership but I'm sure it would end in a world of pain from Mrs Jem. I am now considering a 2.4 Vtec Honda maybe a better solution to the MPG blues with out going down the oil route.