sentences:  And in 1994 there was even more powerful model Audi RS2 Avant based on Audi 80 model of joint development of Audi and Porsche having 315 hp.The model was equipped with components from Porsche.As in 1973, Audi, together with Porsche, also developed a prototype based on the Audi 100 Coupé S, produced in 1968, which has 112 hp.