2 friends bought swift
almost 10k plus driven now
both millage in start were 10...but after oil changes..its getting better
and now saying they r getting up to 13 in isb
@cng..not factory fitted
few members have done it..and they r using some cng kits from a company in karachi ....they r making it for swift specially ...and he is satisfied with it
search forum...his topic must be in CNG or any other sub forum
Hope this helps