A vehicle power indication status quantity display unit (16a) displays on an indicator the vehicle power indication status display quantity, which is the required torque for driving a hybrid vehicle divided by the maximum torque which does not excessively worsen the fuel consumption. An HV Eco Zone (502) of the vehicle power indication status quantity display unit (16a) is the zone determined by the upper limit value and the lower limit value of the HV Eco range which indicates that the motor is being effectively utilized as the vehicle travels. It is determined whether or not the vehicle power indication status quantity (505) is within the HV Eco Zone (502). When this quantity is within the HV Eco Zone (502), the diagnosis is that low fuel consumption driving is taking place in relation to acceleration and deceleration. For example, the percentage of the travel distance which was traveled with the vehicle power indication status quantity (505) within the HV Eco Zone (502) range during one trip is made into a score. The driver can be made more aware of low fuel consumption driving in relation to acceleration and deceleration by the provision of appropriate advice to the driver in accordance with the score.
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