A disclosed electromechanical brake booster (10) for a vehicle brake system comprises a driving arrangement (12, 16) for driving at least one actuation device (18) designed to actuate a brake cylinder(20). The driving arrangement includes at least one electric motor (12) and a transmission (16) for coupling the electric motor (12) to the at least one actuation device (18). The transmission (16) comprises at least one first spur gear (26) and at least one second spur gear (30), the electric motor (12) driving the first spur gear (26) directly and the second spur gear (30) via at least one intermediate gear (28).