replaced Autolite with NGK spark plugs on Ford Festiva and it runs much better again due to gap - Autolite need to be gapped to 1.1mm and NGK is gapped correctly 1.1mm - when I did not gap Autolite from 1mm to 1.1mm petrol consumption was up 25% so a tank only covered 300km versus 400km - Autolite came from Supercheap Auto and NGK from Repco - it is worth replacing wrong gapped spark plugs as #petrol is so expensive #cars #maintenance #sparkplugs #ford #festiva