The Countach was styled by Marcello Gandini of the Bertone design studio, the same designer and studio that designed the Miura. Gandini was then a young, inexperienced designer—not very experienced in the practical, ergonomic aspects of automobile design, but at the same time unhindered by them. He produced a quite striking design. The Countach shape was wide and low (42.1 inches), but not very long. Its angular and wedge-shaped body was made almost entirely of flat, trapezoidal panels. There were curves, notably the smoothly coke-bottle wing line, but the overall appearance was sharp.The doors, a Countach trademark, were of a 'scissors' fashion—hinged at the front with horizontal hinges, so that the doors lifted up and tilted forwards. This was partly for style, but just as much because the width of the car made conventional doors impossible to use in an even slightly confined space. Care needed to be taken, though, in opening the doors with a low roof overhead. (With the car's poor rear visibility and wide sills, this led to drivers adopting a method of reversing the car for parking by opening the door, sitting on the sill and reversing while looking over the back of the car from outside.)
Aerodynamics, however, were still unfortunately unable to match the sleek looks of the car.
The pure style of the prototype was progressively enhanced or cluttered (depending on one's point of view) by the evolution of the car to improve its performance, handling, tractability, and ability to meet mandated requirements. This began with the first production model, which included several vents which were found to be necessary to cool the engine adequately. These included the iconic NACA duct on the door and rear fender of each side of the car. The car design changes ended with a large engine vent directly behind the driver, reducing the rearview. Later additions, including fender flares, spoilers, carburetor covers, and bumpers, progressively changed the aesthetic values of the car.
The Countach's styling and visual impression caused it to become an icon of great design to almost everyone except automotive engineers. The superior performance characteristics of later Lamborghini models (such as the Diablo, or the Murciélago) appealed to performance car drivers and engineers, but they never had the originality or outrageousness that gave the Countach its distinction. The different impressions left by the various Lamborghini models have generated numerous debates and disagreements over what constitutes 'classic' or 'great' automotive design (elegant looks and style, vs. technical and engineering superiority).

The word countach (pronounced [ˈkuntɑʃ]) is an exclamation of astonishment in the local Piedmontese language - generally used by men on seeing an extremely beautiful woman. While the term is often considered untranslatable into English, it is essentially equivalent to the British lager lout verbalization "Fwwaaaa". Or, it can also be considered the verbal equivalent of a wolf-whistle.
The Countach name stuck when Nuccio Bertone first saw "Project 112" in his studio. The prototype was introduced to the world at the 1971 Geneva Motor Show. Most previous Lamborghini car names were associated with bulls and bullfighting.

The Lamborghini Murciélago is a high performance sports car produced by Italian automaker Automobili Lamborghini S.p.A. and designed by Luc Donckerwolke. It was introduced in 2001 as the successor to the Diablo. The Murciélago is a two-door, two-seat coupé. To celebrate the company's 40 years in operation, 50 special edition Murciélagos were built during the autumn of 2003. An open-top version called the Murciélago Roadster was introduced in 2004 for the 2005 model year. The roadster features similar performance to the coupé with a more aggressive rear flank, as well as a considerably higher price tag.
The Murciélago sports a 6.2-litre version of the Lamborghini V12 engine, a six-speed manual or six-speed sequential automatic transmission, and four-wheel drive. It also has a rear spoiler that can be raised to an angle of 70 degrees, side mirrors that fold in to improve aerodynamics, and side scoops that automatically open to the needed size to let in just the right amount of air needed to cool its engine. The 2008 car's fuel economy is 8 mpg (U.S.) (29 l/100 km) city and 13 mpg (U.S.) (18 l/100 km) freeway, making it the least efficient 2008 car for city and highway driving, according to the EPA.
The coupé's base price is US $313,000, which is US $107,000 more than its smaller sibling, the Lamborghini Gallardo.
In 2006 the Murciélago's engine was replaced by a stronger 6.5-liter engine and the car's name was changed to Murciélago LP640. For the 2007 model year Lamborghini did the same with the roadster model, which is now called Murciélago LP640 Roadster. Both versions received a minor facelift.

After campaigning the Diablo SV-R for four years in the Diablo Supertrophy Lamborghini launched a completely new car for the 2000 season. This Diablo GTR is a modified version of the 6 litre GT version of the Diablo launched in 1999. In comparison with the Diablo GT, GTR most important features are a modified chassis frame with integrated roll bar, improved suspensions, central fixing nut for the rims, race braking system, additional radiators for transmission oil cooling, very high performance rear wing (directly bolted to the chassis), simplified interiors and weight reduction. The engine is basically the same V12, 6 litre, of the Diablo GT which thanks to the adoption of a specially tuned exhaust system, without catalyser, delivers 590 hp (440 kW/600 PS) (575 in the GT model).

The engine management system is based on the proprietary Lamborghini LIE electronic engine control system tuned for racing. Fuel injection is sequential multipoint and ignition is static with individual coils. Lamborghini Data Acquisition System, LDAS, and diagnostic functions are integrated in the engine electronic management system.

For the engine cooling, two water radiators in parallel are side mounted to the engine and an engine oil cooler is front mounted as in the Diablo GT. Additional coolers for gearbox and differential oil are installed in order to better match the racing overloads.

The transmission is on the rear wheels through a Lamborghini 5 speed gearbox with one basic gear ratio option and an alternative option for a shorter 5th gear ratio. The gear box lever is in an asymmetric position on the central tunnel in order to be closer to the steering wheel, for better control. The steering system is power assisted.

The tubular chassis frame integrates the roll bar and is directly connected to the rear wing. The front suspension is modified for racing. Shock absorbers and anti-roll bars are adjustable. The rims are lightweight magnesium alloy with central fixing nut and they accept racing type tyres. A special racing fuel tank with fast filling system has been installed. The braking system is based on the Diablo GT high performance module. New racing brake calipers have been adopted to better match the very severe racing conditions.

Most of the body is carbon fibre made, except for the roof, which is made of steel for torsional rigidity, while the doors are made of aluminium, for safety reasons.

The cockpit fittings are simplified to meet racing requirements. The driver seat has been moved towards the longitudinal axle of the car, reducing the size of the central tunnel, to ensure a better driving position. Racing switches for ignition and for other functions have been adopted instead of the series push buttons. The fire extinguisher system is installed on the right side of the cockpit with activating switch on the tunnel. The driver's seat is of racing type with a six-point safety belt and the steering wheel is also racing type.

A production run of 30 cars was planned at the launch of the car at the 1999 Bologna Motorshow, but at the end of the run 40 cars were built .