Cars Q&A

dear sir, i can plan punto 1.2 petrol version pls tell me the avg of punto. 1--can we install cng in punto and how much time/kilometer we drive petrol to cover warenty.after 2.year fiat engine warrnty will be finished then we install c.n.g or not(what they effect from servise /warenty. 2--ritz lxi is my 2nd choise pls suggest me. devinder yadav