The A.L.F.A 15 HP is a medium size car produced by A.L.F.A., a company that later became Alfa Romeo, from 1911 to 1913. The model was derived from the A.L.F.A. 12 HP and had a four-cylinder engine with 2,413 cc of displacement. Compared to the predecessor, the displacement was unchanged, but power output was increased. The 15-HP engine had a compression ratio of 4.2:1 and developed a maximum output of at 2,400 rpm. Bore and stroke were, respectively, . It was a front-engine, rear-wheel-drive car. The 15 HP had a three-speed gearbox, and was equipped with a parking brake. The

track Track or Tracks may refer to: Routes or imprints * Ancient trackway, any track or trail whose origin is lost in antiquity * Animal track, imprints left on surfaces that an animal walks across * Desire path, a line worn by people taking the shorte ...

was . The 15 HP was available in two types of body:

torpedo A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, su ...

and saloon. The car had a top speed of . It was designed by

Giuseppe Merosi Giuseppe Merosi (8 December 1872 – 27 March 1956) was an Italian automobile engineer and designer. Born in Piacenza, Merosi worked as a building surveyor, before he decided to explore his gift for automotive engineering. He first earned expe ...

and was priced at 9,500 lire.

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{{Alfa Romeo Pre War Timeline 15andnbsp;HP Cars introduced in 1911 Brass Era vehicles