Recently my younger bro changed air filter but he installed after market air filter (bit turbo) in my swift 12 old filter have done 15k on odo.
After changin filter fuel average change to pathic 6 km /l in my whole isb tour frm gujrat to isb fuel cost 3200rs i changed again to old air filter that still layin in my cAr pick nd fuel average changed alot nd now givin 14 km /l.
Advise fr evryne to go fr orginal air filter 