Hybrid vehicle

A hybrid vehicle comprising:

• an engine;
• a fuel tank configured to supply fuel to the engine;
• a motor;
• a battery configured to supply electric power to the motor;
• a charger configured to carry out external charging that charges the battery by use of an external power source;
• and
• a communication device configured to:
• receive a communication request from a vehicle external system, requesting information related to a use index indicative of a degree of use of external charging over a predetermined time period;
• acquire the use index from an electronic control unit that calculates the use index;
• transmit, to the vehicle external system, the use index in response to the communication request;
• and
• receive, from the vehicle external system, information on at least one of a non-preferential service or a penalty in a case where the degree of use of external charging is determined to be lower than in a case where the degree of use of external charging is determined to be higher based on the use index.