Bro if ur able to install cng with lambda control system in ur swift, it willl run like a charm...acceleration/consumption will be awsome and it will neglect you at 95% circumstances... As im in punjab and cng is mostly not available thts y i hav stoped using cng in my car.. rest people says tht cng wont work in swift etc etc but believe me with a lambdra controlled kit u will enjoy the ride...mine swift is 2010 75k odm and im still willing to run my car on cng if availble:(