A control apparatus for a hybrid vehicle includes a drive mode control portion and a battery degradation determination portion. The chive mode control portion sets the drive mode to a CD mode after the charging of a battery by a battery charger ends as the state of charge of the battery reaches a first predetermined range. The drive mode control portion switches the drive mode to a CS mode if, after the hybrid vehicle starts driving in the CD mode, the state of charge of the battery declines to a second predetermined range that is lower than the first predetermined range. The battery degradation determination portion performs determination regarding degradation of the battery on the basis of data collected while the vehicle is driving.