In a continuation of Lamborghini's tradition of giving its cars names from the world of bullfighting, the Murciélago was named for a fighting bull that survived 28 sword strokes in an 1879 fight against Rafael "El Lagartijo" Molina Sanchez, at the Coso de los califas bullring in Córdoba, Spain. Murciélago fought with such passion and spirit that the matador chose to spare its life, a rare honor. The bull, which came from Joaquin del Val di Navarra's farm, was later presented as a gift to Don Antonio Miura, a noted local breeder; thus began the famed Miura line of fighting bulls, which provided the name for one of Lamborghini's first great cars.
The Murciélago "LP640" new designation accompanying the car's name indicated the engine's position and orientation within the car (Longitudinale Posteriore, or "Rear Longitudinal"), and referenced the V12 engine's uprated power output; with its displacement increased to 6.5 litres, the engine in the new car made 640 PS (631 hp) at 8000 rpm. The Murciélago's exterior received a minor facelift, with revised front and rear fascias and side air intakes. A new exhaust system is shaped into the rear diffuser, and the left-hand side air intake is enlarged to accommodate the oil cooler. A revised suspension , a launch control system, and an all-wheel drive system round out the performance modifications.