The invention relates to an active parking assist system (4) for a motor vehicle (2), wherein the parking assist system (4) comprises a plurality of capacitive ultrasonic converters (6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6j, 6k, 6l, 6m, 6n, 6o) which are essentially spaced evenly in a horizontally circumferential manner outside the motor vehicle (2).