Die Skrupellose (2001)

The sisters Monika and Daniela unexpectedly inherit a car dealership. Unfortunately, their brother Dieter is the third heir. Monika tries to seize the inheritance on her own in a bizarre way, while Daniela sucks the juice out of master car mechanic Schröder's loins, Monika spreads her legs for the estate administrator and cunningly obtains Dieter's signature on the declaration of renunciation. Meanwhile, things are getting out of hand at the car dealership. Salesman Kunze polishes a customer's cunt and apprentice Tina screws the warehouse manager. The new owner is boiling with rage.