Homologated in Group 4, the Fiat 124 Abarth made its debut in competition in 1973, replacing the 124 Sport Spider 1400 and 1600 Group 4. The 124 Abarth Gr.4, a true milestone in Fiat's history in rallying, had a 4 engine 1839cc cylinders (86x79.2) with a power that reached - at its maximum development at the end of 1975 - around 220hp at 8000 rpm. The gearbox was 5-speed with front clutches and the differential was self-locking. Already in 1973 the Abarth 124 achieved second place in the world rally and victory in the European championship, with Barbasio/Macaluso. In 1974 and 1975 the positive results continued, with Italian and European titles and excellent placings in the world championship. In an official capacity, the 124 Abarth raced until the 1976 Monte Carlo Rally, where it showed up with the new colors of the sponsor Olio Fiat, but continued to be used for a long time by private teams until the homologation expired.