Abstract: An exhaust brake system for a motor vehicle comprises an exhaust brake valve inserted in the exhaust passage of an engine, and a control unit for correcting a depression stroke of the accelerator pedal for a predetermined period from the point of time at which the exhaust brake valve is switched from the closed position toward the open position as a result of the depression of the accelerator pedal, wherein the control unit controls a fuel injection pump in such a manner that the amount of fuel supplied to the combustion chamber of the engine is reduced to a value smaller than the amount of fuel injection determined by the actual depression stroke of the accelerator pedal.