To provide a fuel consumption management device suppressing an increase in fuel consumption without deteriorating drivability even if a fuel economy improvement means is actuated when a stop maintaining means is operated.

The fuel consumption management device determines whether the stop maintaining means for maintaining the stopping state of a vehicle, is being operated. When the determination result is such that the stop maintaining means is being operated, the fuel consumption management device detects the gradient of a road surface and, based on the detected gradient, selects a target means to be actuated out of a plurality of fuel economy improvement means for improving the fuel economy of the vehicle at least including a neutral control means and an eco-run control means, so as to actuate the selected fuel economy improvement means.