High time I need to upgrade to a CNG version

Pros : Good appearance, powerful engine

Cons : Petrol engine

I have a Honda City Corporate MT which I have been using for quite some time, now it is becoming difficult for me to maintain this sedan as it is powered with a petrol engine and petrol process have seen so many hikes of late that it is very expensive to drive a petrol car now. I am looking for CNG option which will lower down my fuel expenses massively, since I have to drive daily from Jungpura to IFFCO chowk everyday therefore I need a CNG option for myself.

Though I love my City and the only problem which I have with it right now is its petrol engine which has become difficult for me to maintain. Please suggest me options in sedan/premium hatchback that can suffice my needs. However I have a few options in my mind like Hyundai Accent CNG and Maruti SX4 CNG, I am researching on the CNG sedans let us see which sedan would I be bringing home.