The sticker read: “Before you lift the nozzle, tell the pump exactly how much you want to put in and it will stop for you."  However, road users are warned that not all petrol stations

will have this handy tool which could leave many caught out.   In this situation, road users will simply need to keep an eye on the fuel meter at all times to work out how much they are

putting into their cars. Drivers will need to slowly release pressure on the nozzle as they get closer to the amount they need.