Test device for a hydraulic braking system with electromechanical brake booster and method for analysing and/or bleeding a hydraulic brake system with an electromechanical brake booster

The apparatus (10) has an electronic device (16) that is adapted to a brake booster (12) through control signal (18a,18b), such that predetermined path is adjusted through a motor (20) and/or a measuring time interval during operation of brake operating element (22) of brake system with operating speed within desired range of values is determined through sensor and/or evaluation device (24) of booster. The electronic device defines leakage of brake system, pressure-displacement characteristic of braking system, operation state and/or motor torque characteristic of brake booster. An independent claim is included for a method for inspecting and/or venting hydraulic brake system of vehicle.