Now when you have put it this way, here goes. Well most of the auto cars here don't perform good on CNG and they consume far more gas then there manual versions...A friend of mine has a cuore auto version on CNG and I asked him about the performance, he said that it's satisfactory.... But on the other hand, on the last pakwheels gettogether in isloo, hashim had an Auto Vti on CNG and it was performing gr8, but he also had some modifications done....
So in short, CNG is not good in auto cars when compared to manual version, but what the hell, you don't ruin your clutch and your left foot is at peace when u drive in city right!!!!!!!!