A motor vehicle charging inlet structure includes: a first charging socket (7) disposed in a recess portion (4) of a vehicle body and connected to an electricity storage unit of a motor vehicle (1), the first charging socket being configured to be connected to a charging connector (11) which supplies electric power from an external power supply to the electricity storage unit; a lid configured to open and close the recess portion; and a lock member configured to, when the lid is closed, come into engagement with the lid to fix the lid in a closed state and configured to, when the charging connector is connected to the first charging socket in a state in which the engagement of the lock member with the lid is released, come into press-contact with the charging connector to fix the charging connector in a connected state.