The Polonez is a rebodied Polski Fiat 125p that Fabryka Samochodów Osobowych (FSO) built under license from Fiat. The internal components, including modernized 1.3/1.5 Litre engines, (pistons and carburetor), the chassis, and other mechanicals, were from the Polski Fiat 125p, but the body was an entirely new hatchback body designed by Giorgetto Giugiaro]. The car was meant to be equipped with Fiat's 2.0 Litre DOHC engines in the 1980s, but financial problems at the time made the purchase of a license from Fiat impossible. This is also why the 125p was produced simultaneously with the Polonez for more than a decade. Moreover, mechanical modernization only took place when it could be applied to both cars. This situation finally changed after the production of the 125p ended in 1991.