The Lamborghini Countach is a rear mid-engine, rear-wheel-drive sports car produced by the Italian automobile manufacturer Lamborghini from 1974 to 1990. It’s one of the exotic designs conceptualized by Italian Design house Bertone, which pioneered and popularized the sharply angled "Italian Wedge" design language. The notable ‘scissor doors’ of the Countach prototype were a prominent design feature carried over to the production Countach as well as many subsequent Lamborghini models. The Countach also popularized the "cab forward" design concept, which pushes the passenger compartment forward to accommodate a larger rear-mounted engine.

The first showing of the Countach prototype was presented at the 1971 Geneva Motor Show, as the Lamborghini LP500 concept car. Following the LP500 prototype's public debut in 1971, the body design was progressively altered during pre-production testing to improve aerodynamic performance, high speed stability, engine cooling and ability to meet mandated safety requirements.

This resulted in many differences between the LP500 prototype and the production LP400. The most visible change was the addition of several ‘vents’ to improve engine cooling and air intake. These included NACA ducts spanning the doors and rear fenders on each side and protruding air intake boxes, which replaced the louvered vents behind the side windows.

In 1985, the engine design evolved again, as it was bored and stroked to 5,167 cc (5.2 L) and given 4 valves per cylinder—quattrovalvole in Italian, hence the model's name, Countach LP5000 Quattrovalvole or 5000 QV in short. The Lamborghini Countach with controversial plates ‘Call 000’ is the ultimate head turner, especially in this modern era.