Patent ID: 7346449

Claim:
A driving evaluation apparatus for evaluating a result of driving a vehicle in a certain driving interval on the basis of driving data acquired at a time of driving in the driving interval, comprising: an energy consumption efficiency calculator calculating an energy consumption efficiency in the driving interval, by using the driving data; a driving environment variable calculator calculating a driving environment variable indicative of an environment factor which exerts an influence on energy consumption by driving in the driving interval, on the basis of the driving data; a function storing unit storing a plurality of probability density functions or cumulative distribution functions having the energy consumption efficiency as a probability variable; a function selector selecting a probability density function or a cumulative distribution function corresponding to the calculated driving environment variable; and an evaluation value calculator calculating an evaluation value for evaluating a result of driving in the driving interval by using the selected probability density function or the selected cumulative distribution function and the calculated energy consumption efficiency, wherein the energy consumption efficiency calculator calculates an energy consumption amount in the driving interval, a travel distance in the driving interval, and a racing energy consumption amount as an energy amount consumed by racing in the driving interval and calculates, as the energy consumption efficiency, a no-racing energy consumption rate which is an expected energy consumption rate in the case where no racing is performed, on the basis of a no-racing energy consumption amount as a difference between the energy consumption amount and the racing energy consumption amount and the travel distance.