How many movies have Sigi Rothemund and Werner Röglin collaborated on?

They have worked on 4 movies together! Their first movie together was Love Bavarian Style (1973) while their highest rated movie together was Plem, Plem – Die Schule brennt (1983). They have not worked together since Plem, Plem – Die Schule brennt (1983). They are most known for their comedy films together.