Cars Q&A

Please help to clear confusion. My usage in Delhi is about 1200 KM/month and ocassional trips outstation. Budget is 4-5 Lacs. With Manza launch it is more complicated. Indigo Manza Petrol (4.8 L), Fully loaded Petrol Ritz Zxi (4.8 L), Punto Petrol 1.4 (4.65 L) or Diesel Punto (4.85), Vista Quadrajet (4.45 - 4.8 L) . Petrol Cars If I buy will convert to CNG or Indica Vista Quadrajet which at same cost of Ritz Petrol offers Diesel heart. I drive a Maruti 800 now , one car for self and family (Total 4 Adults incl. me and two kids). Confused which will be better as a whole considering overall features, economy, maintenance and other virtues. Is CNG ques to fil and higher maintenance better than Diesel said to be prone to vibrations and maintenance costs? Thanks and Regards,