The Fiat Zero, known also as the Fiat 12/15 hp,The letters 'hp' defined its fiscal horsepower rather than its bhp. was a car produced by Fiat from 1912 to 1915. At launch it sold for 8,000 lire, which later was reduced to 6,900 lire. It was equipped with a , engine that achieved about and could reach about . It was the first Fiat to sell more than 2,000 similarly bodied units, most being four-seater bodies. Production ended in 1915 when the factory was converted for war production.
There was also a light bodied version produced which claimed various speed records.
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References Fiat Group - History (Retrieved December 27, 2005)