Fuel gas-powered vehicle

Fuel gas-powered vehicle, comprising: a Brenngaseinfullkanalanschluss which receives a supply of a fuel gas from a fuel gas supply device on the outside of a vehicle body; a connecting hole connecting the interior of the vehicle body and the outside of the vehicle body with each other; a shielding member which shields the Brenngaseinfullkanalanschluss and the communication hole from the outside of the vehicle body; and a fuel gas reservoir unit which stores the signal supplied from the fuel gas supply through the Brenngaseinfullkanalanschluss fuel gas, characterized in that the communicating hole is designed so that a gas leakage detector for detecting a gas leakage which occurs when the fuel gas to the fuel gas storage unit is supplied, can be inserted from outside the vehicle body.