I have a (non-microlight) Eurofox with 912iS engine. I tend to cruise at 95kts burning about 12litres/hour Mogas and do about 100 hours/year. You can find all the performance figures on the Eurofox website, and believe them! Rotax maintenance is straightforward and (parts-wise) primarily oil change every 100 hours (about 3litres plus filter) and plugs every 200 hours so pretty frugal. You can do this yourself or get a local Rotax IRMT to do which will cost about £200/£250. It operates under an LAA Permit to Fly which is £200/year plus something for your inspector. Other costs such as insurance and hangarage will be highly bespoke but easy for you to check out. I would also applaud Eurofox's customer service. By all means pm me with any specific questions.