ROME — Sergio Pininfarina, who headed a family company known for its designs of sleek ­Ferraris and other cars, has died. He was 85.

The company said Tuesday that Mr. Pininfarina died overnight at his home in Turin. No cause of death was given.

The company, founded in 1930, has designed cars for Fiat, Alfa Romeo, Cadillac, and Volvo, but is most closely associated with Ferrari, designing nearly all its models since the 1950s. It ceased making car bodies in 2010 to focus on its design and engineering businesses.

Mr. Pininfarina took over as president in 1966, upon the death of his father.

He stepped down to ­become honorary president in 2006 and was also named a senator for life.

He leaves his wife and two children.