The Lancia Delta HF 4WD was unveiled at the April 1986 Turin Motor Show, becoming the top of the Delta range. Engine output was 165 PS (121 kW; 163 hp) at 5,250 rpm, and 26.5 kg⋅m (260 N⋅m; 192 lb⋅ft) of torque at 2,750 rpm. The four-wheel-drive system used on the HF 4WD and all the coming iterations of the HF Integrale was based on the one developed for the 1985 Lancia Delta S4 Group B rally car, albeit in a transverse front-engine instead of a longitudinal mid-engine layout. Visually the HF 4WD carried over most accoutrements of the HF Turbo.