The 120 S and the 130 RS were Sport/Rallye cars, produced in a small number.
References in fiction
In the 1988 film The Unbearable Lightness of Being, protagonist Tomas drives an S100. As the action takes place against the backdrop of the Prague Spring of 1968 and its violent aftermath, the use of a car that only entered production a year later is unintentionally anachronistic.
References in Music
The Škoda 100 is the vehicle driven by the protagonist in Ivan Mládek's 1978 single Jožin z bažin.