Zust

thumb|Original Zust logo thumb|A 1912 28 hp model Zust (originally Züst) was an Italian car manufacturing company operating from 1905 to 1917.

The company was founded by engineer Roberto Züst, an Italian industrialist of Swiss origin, who owned a precision tool manufacturing plant at Intra, near Lago Maggiore (formerly the Guller & Croff iron foundry). Züst experimented with prototypes of cars from around 1900 on and in Milan in 1905, he founded the Zust company for manufacturing cars and commercial vehicles. His first models were huge and expensive machines propelled by four-cylinder engines from 7432 cc (454cuin) to 11308 cc (690cuin). These were joined by a slightly smaller 5-litre (305cuin) model in 1908. A Zust 28/45 HP participated in the 1908 New York to Paris Race and finished third. Giustino Cattaneo (later of Isotta Fraschini) worked for him.