The utility model relates to a gas dispenser, an automobile gas consumption statistical system and a gas automobile. An information sending module is arranged in the gas dispenser, is connected with a gas adding volume pulse signal output port of the gas dispenser, and is used for receiving and converting gas adding volume pulse signals of the gas dispenser into analog signals and sending the analog signals to an information receiving module. The information receiving module is connected with an information processing module in a communicated mode, and is used for converting received analog quantity into digital quantity and sending the digital quantity to the information processing module. The information processing module is used for being connected with an automobile control module in a communicated mode to obtain mileage information from the automobile control module and calculating gas consumption according to the received gas adding volume and the mileage, and meanwhile the gas consumption is displayed through an automobile meter displaying screen. The automobile gas consumption statistical system solves the problems that an existing gas consumption measuring system is complex in structure, and the calculating process of fuel consumption is complex.