ENGINE STARTING DEVICE AND ENGINE STARTING METHOD

An ECU executes a program including the steps of carrying out fluctuation suppression control (S230) in a case where a request to start an engine has been made (YES in S200), a rotation mode has been selected, and a motor is being driven (NO in S210, YES in S220) and canceling fluctuation suppression control (S250) in a case where a full drive mode has been selected (YES in 5210) and engagement between a pinion gear and a ring gear has been completed (YES in S240).