The first generation Lancia Delta (Tipo 831) was a five-door hatchback, designed by Giorgetto Giugiaro and released in 1979. A number of variants were created in front-wheel-drive and four-wheel-drive form. Notable among them is the Lancia Delta S4 'Stradale', built to meet homologation requirements for Group B rally racing, and the HF Integrale Evo 1, spawning modified versions which dominated the Group A World Rally Championship, amongst other Race series.