But while the brands were much more distinct in the 1990s and 2000s, Porsche did collaborate with Audi on one of the most interesting cars to wear the four rings on the grille: the RS2 Avant.

The car appears to be an Audi RS2 Avant, the first performance wagon and first RS-badged performance car ever made by the brand. The RS2 was a collaboration between Porsche and Audi, one that led ...