Lamborghini began developing the Diablo in 1985 as a replacement for the Countach model, introducing it for sale on January 21, 1990 at a base price of USD $240,000. Power came from a 5.7-litre, 48-valve version of the legendary Lamborghini V12 featuring dual overhead cams and computer-controlled multi-point fuel injection, producing a maximum output of 492 hp and 427 ft·lbf of torque. The vehicle could reach 60 mph in slightly over 4 seconds, with a top speed of 202 mph.  The Diablo was originally rear-wheel drive and the engine was mid-mounted to aid its weight balance.

Even at over $240,000, the vehicle was somewhat spartan, featuring only basic radio functions (with optional CD playback) along with manual windows, adjustable but unpowered seats and no anti-lock brakes, mostly to minimize the vehicle's already high curb weight. A few options were available, including having the driver's seat moulded specifically for the buyer, a rear spoiler, a factory fitted luggage set (priced at $2,600) and an exclusive Breguet clock for the dash (priced at $10,500).