Jaguar XJ12

The Jaguar XJ12 was announced in July 1972, featuring simplified grille treatment, and powered by a 5.3L V12 engine. At that time the XJ12 was the world's only mass-produced 12-cylinder four-door car, and, with a top speed around 140 mph was marketed as the "fastest full four-seater available in the world today". Although it had been Jaguar's intention that the XJ would take the twelve-cylinder engine, its installation was nonetheless a challenge for the engineers designing it. 

In total, 3,235 of these first generation XJ12s were built.