8-9 is lucky... just ask those of us who have 2 liter midsize cars. You're looking at 7 km/l for an MT and 6 km/l for an AT in urban conditions.

And yes, Opel maintenance is something of a headache, it being a GM car.

Like I said, there are better choices out there, but ALL midsizers in your apparent price range will cost you quite a bit in terms of maintenance.