A motor vehicle collision warning system is described, as well as an automotive vehicle including such a motor vehicle collision warning system. The motor vehicle collision warning system is adapted for analyzing an unwound amount of a driver safety belt and adding an additional distracted reaction time to a pre-set driver reaction time based on the analysis of the unwound amount of the driver safety in order to provide a collision warning earlier than a collision warning based on the pre-set driver reaction time when a driver is determined as being distracted.