Abstract: Method for automatically assessing performance of a driver (110) of a vehicle (100) for a particular trip, wherein current driving data sets, comprising basic driving data are repeatedly read from the vehicle, which method comprises the steps a) collecting previous-trip driving data sets, comprising instantaneous vehicle energy consumption, for different previous trips, different drivers and different vehicles; b) for each of said current-trip driving data sets, selecting at least one corresponding previous-trip driving data set; c) calculating a relative instantaneous vehicle energy consumption value for said selected corresponding previous-trip driving data set or sets, which is relative to a total energy consumption for a respective trip during which the previous-trip driving data set in question was observed; d) calculating a value of the said first trip performance parameter based upon an average value of said calculated relative instantaneous energy consumptions. The invention also relates to a system.

Abstract: Method for automatically assessing performance of a driver (110) of a vehicle (100) for a particular trip, wherein current driving data sets, comprising basic driving data are repeatedly read from the vehicle, which method comprises the steps a) collecting previous-trip driving data sets comprising instantaneous vehicle energy consumption, for different previous trips,different drivers and different vehicles; b) grouping said previous-trip driving data sets into basic historic groups of such sets; c) mapping each current driving data set to a basic historic group; and d) calculating an energy consumption-based trip performance parameter value for the current trip based upon a respective energy consumption-based group performance parameter value for the mapped basic historic groups, which group performance parameter value in turn is calculated based upon the respective instantaneous energy consumption value in the respective previous-trip driving data sets in the basic historic group in question.