A system that notifies the operator, during refueling, when the fuel tank of a vehicle has been filled to contain a predetermined amount. The predetermined amount may include but is not limited to a full condition, an amount that is calculated to satisfy a specific trip, etc. The system may include one or more fuel sensors that can detect conditions of the fuel delivery system, such as the quantity of fuel residing in the tank. The system further includes a controller and an output device. During a refill event, the controller receives the data from the one or more sensors, processes the data, and causes the output device to notify the operator when the tank is filled with the predetermined amount of fuel. The notification can be audible, such as the horn honking, visual, such as lights flashing, or tactile, such as the vehicle seat vibrates.