Fuel pump rip-off: Fixed currency amounts steal your gas

Drivers who pay for fuel using round currency amounts rather than specific volume often lose money due to how fuel dispensers calculate delivery. The decision to pay by a fixed sum triggers software rounding and mechanical timing that typically favors the station over the consumer. Risk Warning: Fueling by a fixed currency amount increases the likelihood of "digital under-filling" caused by software rounding and valve inertia, leading to paid but undelivered fuel. The Impact of Currency-Based Fueling When a driver requests a specific monetary amount, the fuel dispenser divides that sum by the current price per liter. This often results in a long decimal fraction. To avoid exceeding the paid limit, the dispenser's software typically rounds the volume down, or the shut-off valve triggers prematurely.