|Body and chassis|
|Engine||9,425 cc (575.1 cu in) OHV V-12
(11,310 cc (690.2 cu in) from 1935 on)
|Wheelbase||135.0 in (3,429 mm)
146.0 in (3,708 mm)
150.0 in (3,810 mm)
158.0 in (4,013 mm)
The Hispano-Suiza J12 was a luxury automobile made by Hispano-Suiza from 1931 to 1938. It replaced the Hispano-Suiza H6.
The J12 was powered by a V12 engine with pushrod-operated overhead valves. The engine initially displaced 9.4 L (574 cu in) with bore and stroke both being 100 mm (3.9 in) and, with a compression ratio of 5.0:1,delivered 220 hp at 3000 rpm.
Two cars were fitted with long-stroke engines displacing 11.3 L (690 cu in) and delivering 250 hp, and several J12s were later upgraded to the larger engine. Each engine block was machined from a single 700 lb (318 kg) billet.
Hispano-Suiza suspended automobile production in 1938 to concentrate on the manufacture of aircraft engines.