Abstract: The present disclosure relates to a fluid supply system, a vehicle comprising such fluid supply system and a manufacturing method of such fluid supply system. The fluid supply system comprises a first container, a second container and a fluid transfer passage. The first container and the second container are adapted to retain fluid. The first container and the second container are connected to each other through the fluid transfer passage. The first container comprises a fluid inlet to receive the fluid. The first container comprises an air evacuation element configured to limit release amount of air out of the first container, when the fluid is added into the first container in order to increase inner pressure in the first container, thus transfer the fluid into the second container through the fluid transfer passage. The second container comprises an air vent element adapted to provide ambient pressure inside the second container.