Starter driving gear, starter and vehicle

The invention relates to the technical field of automobile parts, and discloses a starter driving gear which comprises a gear body and a plurality of tooth bodies evenly distributed on the periphery of the gear body, a front inclined face is formed between the front end face and the tooth top of each tooth body, and a side inclined face is formed between the front end face of each tooth body and the non-driving tooth side of each tooth body. A first buffer layer is laid on the front inclined face of the tooth body, and second buffer layers are laid on the front end face and the side inclined faces of the tooth body. According to the flywheel gear, the gear body and the gear of the flywheel are easier to mesh, collision can be reduced so as to lower noise, further, a first buffer layer is laid on the front inclined face of the gear body, and second buffer layers are laid on the front end face and the side inclined faces of the gear body, so that when the gear body is meshed with the gear of the flywheel, the g