1979 Fiat 131 Abarth Designed by design house Bertone, the 131 was Fiat's new WRC weapon. Based on the civilian 131 sedan, the Abarth has a similar 2.0 liter four-banger that produces a frail 138 horses. Although that may be a small number, the Abarth has an extreme fun factor and great handling that can tackle back roads with ease. Only about 500 road units were made, and buyers could choose to buy a WRC replica, or a completely road-focused model.