VEHICLE CONTROLLER AND VEHICLE CONTROL METHOD

A vehicle includes an internal combustion engine configured to use hydrogen as fuel, and an electric motor configured to perform motoring that rotates a crankshaft of the internal combustion engine. A controller is configured to execute a determination process and a ventilation process. The determination process is executed when startup of the internal combustion engine is requested. The determination process determines, based on a predetermined condition, whether a hydrogen concentration in a cylinder of the internal combustion engine is high. The ventilation process is executed when the determination process determines that the hydrogen concentration is high. The ventilation process performs motoring.