Lamborghini V12 discontinued their first-generation V12 after the Murcielago, opting for a brand-new V12 that first saw use on the Lamborghini Aventador. When Ferruccio Lamborghini set out to compete with Ferrari, he contracted Giotto Bizzarrini to design the engine for his car and, according to some accounts, paid him a bonus for every horsepower over what Ferrari's V12 could produce. The finished V12, with minor improvements, went on to become the 6.5 litre powering the Lamborghini Murciélago LP 640, and completed its service for Lamborghini with the final version of the Murciélago, the Murciélago LP 670-4 SuperVeloce. The engine was designed from
Lamborghini Miura to showing the car, they decided to fill the engine bay with ballast and keep the hood locked throughout the show, as they had three years earlier for the début of the 350GTV. Sales head Sgarzi was forced to turn away members of the motoring press who wanted to see the P400's power plant. Despite this setback, the car was the highlight of the show, immediately boosting stylist Marcello Gandini's reputation. The favourable reaction at Geneva meant the P400 was to go into production by the following year. The name "Miura", after the famous Spanish fighting bull breeder (), was