@Kashmir1 Borther
You are commenting that CNG is cheap compared to diesel. You are right according to the current situation but I think you are wrong if you predict the future situation. You know Pakistani nation (Ham Sab) just follow the trend whether it is right or wrong. We don't condier it quality attribute and other factor.
Now a day every one is converting his car to CNG or buying CNG car. Can you predict the futuer price of CNG (in next five year). I am sure it will be much much higher than Petrol. You also know there is no rigid policy of our government. Today Pakistan is signing a pact with Iran on Gas pipeline which will perhaps fulfill our CNG requirement if it is completed. But who give you surity of this pact. Today Musharaf is president, perhaps in next year it will hanged or passed away. Will next government (BB, Nawaz obviously) follow the policy of Musharaf. I think never.
Furthermore Pakistan alone can't fulfill gas requirement of we people. Perhaps (God save from this incidence) Iran will be sriked by US then where will be the Gas pact. I think in futuer CNG will be much much expensive than CNG.
As for as article is concerned I have read it it relate to the Turbo engine (4x type) which are not used in Sedan.
These engine are used for racing and pulling heavy weight purpose.
Brother never never go for CNG if you have to drive the wheel in remote area, highway, hilly area. Go for CNG obviously if you have to drive in city only.