People often mistakenly add the wrong fuel to their tank. It's easily done but not in a Mondeo. Ford Easy Fuel® is a capless refuelling system with a mis-fuelling inhibitor that can tell the difference between the fuel pump nozzles used for petrol and diesel. It only allows you to fuel up when the correct nozzle is inserted. It also means you don't have to worry about handling dirty petrol caps or mistakenly leaving them behind at the petrol station.