Disclosed is a vehicle including a seat on which a passenger may be seated; an airbag cushion that is expanded according to an inflow of a gas to protect the passenger seated on the seat; an inflator that introduces the gas into the airbag cushion; a first vent hole provided at the airbag cushion to exhaust therethrough the gas introduced from the inflator; a second vent hole provided at the airbag cushion to face the passenger to exhaust therethrough the gas introduced from the inflator; and a vent amount adjustment member connected to the second vent hole to adjust the amount of the gas exhausted through the second vent hole depending on whether an adult is seated on the seat or a child restraint system is installed on the seat.