Dear all thanks for your valued suggestions & comments. Let me put it in more elaborate way so that its easy to give suggestions.
I have to buy a brand new corolla, i can afford to buy a brand new 2.0D saloon or altis automatic.
However afterwards i cant afford petrol daily. putting a SIS kit will cost 85000/- and will also void the warranty, followed by very bad re-sale of altis. should i go for altis or 2.0D saloon?
when is new corolla with D4D diesel motor expected?
Iam abroad and have no idea of current CNG kit performance, however in 2003 when i was there, CNG kits that time didnt had pic esp with AC on and needed frequent tuning..................therefore im skeptical about CNG.