Providing a meshed gear for a vehicle disposed on a power transmission path between an engine and drive wheels and made up of a pair of gears meshed with each other, the meshed gear being capable of achieving reduction in both the booming and rattling noise and the gear noise generated during power transmission. The effect of increase in the moment of inertia due to forming the driven gear 64c into a ring shape and adding the additional vibration system 100 can be counteracted by vibrating the additional vibration system 100. As a result, the reduction of the booming noise and the rattling noise can be achieved at the same time with the reduction of the gear noise.