In mode transfer control apparatus and method for a hybrid vehicle, in a
state in which the vehicle is in at least one of a start state and a
travel state and in one steady-state mode of a continuously variable
transmission gear ratio mode and a fixed transmission gear ratio mode, a
mode transfer to the other steady-state mode of the continuously variable
transmission gear ratio mode and the fixed transmission gear ratio mode
is inhibited in a case where a driving point of the vehicle determined
according to a detection value of a vehicle speed and a calculation value
of a target driving force is present within an overlap area on a
steady-state mode area map in which both of a continuously variable
transmission gear ratio mode and a fixed transmission gear ratio mode are
selectable.