You're not going to get many petrol cars made in the last decade, with circa 350hp, giving much more than 25mpg as a long term average.  The latest gen x35i BMWs can get 30+, but only at stock power.
27-28 for stage 2+ is bloody brilliant.  I was lucky to get 20 from my old E30 and E34 2.5i BMWs, and 24 was good from my standard VR6 Corrado.  Things have come a long way.