The current generation i-vtec city (2009-present) always had prosmatec as its automatic transmission they have only re-badged it from AT to prosmatec to communicate their USP in a better way.
Coming back to your question of mileage. I booked mine in Nov'11 and just got it recently in the last week of May'12. The car drives really sluggishly (almost 2000 kms driven), shifts really hard and the mileage in city if I drive it really carefully (hypermilling), it gives a mileage of 10.5km/l. On motorway at speed of 120-125km/hr 12.5km/l and on highway at speed of 90-100km/hr 15-16km/l.
In other markets Honda is offering this car with CVT transmission it's only in Pakistan where it is offered in Prosmatec and that too because CVT was a flop due to CNG. To cut it short the automatic transmission (same as 8th Gen Civic aka reborn) being offered in Pakistan is not a good match for this engine/powertrain.