Sa presyo ngayon mas pipiliin mo na yung longevity per liter mo. For example may diesel car ako na kaya mag 16-15km per liter on a hiway. And may gasoline ako na kaya 14 on a hiway mas luma na kaso ung gasoline car ko kesa sa diesel. But on a city driving mas matipid ung gasoline engine ko compare sa diesel. Kaya it all boils down to how many liters per kilometer or as some say smiles per liter.