I have finally decided to go with Toyota Ecotec, below are the reasons mostly suggestions from all my fellow Pakwheelers.
1/ Toyota Corolla Ecotec can deliver economy of 5 rupees per KM while Civic would cost me around 10 Rupees per KM on petrol as I have decided that's it's not worth converting the civic to CNG.
2/ Delivery date of Toyota Corolla Ecotec is last week in Jan 2012 while delivery date of Civic is Last week of March or April, Honda Defence could not confirm the delivery date at all....
3/ Also the registration cost of The Ecotec is around 35k while Civic is about 85k.
I would like to add I currently drive a Honda Civic 2006 (Not a Reborn) and I can surely say the quality of Honda in Pakistan is much much better compared to Toyota but I guess these are some things I'll have to live with ...