Petrol vs CNG savings calculator
Enter current prices and your vehicle’s real mileage. We do not insert an assumed “live” price or mileage.
Sources and calculation
Cost/km = fuel price ÷ mileage. Monthly cost = cost/km × monthly distance. Verify current petrol prices through PPAC and CNG prices through your PNGRB-authorized city gas distributor. Mileage is vehicle- and driving-specific, so it must be supplied by you.
Results exclude conversion cost, maintenance, financing and changes in fuel prices.