The Diablo was presented to the public for sale on January 21, 1990. Its power came from a 5.7 L (348 cubic inches) dual overhead cam, 4 valves per cylinder version of the existing V12engine and computer-controlled multi-point fuel injection, producing a maximum output of 485 HP and 428 lbf⋅ft of torque to reach a top speed of 202 mph.
The Diablo was rear-wheel drive and the engine was mid-mounted to aid its weight balance. The Diablo was capable 0-60 MPH in 4.2 seconds, 0-100 in 9.3 seconds and 0-125mph) in 13.7 seconds.
The Diablo came better equipped than the Countach; standard features included fully adjustable seats and steering wheel, electric windows, an Alpine stereo system, and power steering from 1993 onwards. Anti-lock brakes were not initially available, although they would eventually be used. A few options were available, including a custom-molded driver's seat, remote CD changer and subwoofer, rear spoiler, factory fitted luggage set and an exclusive Breguetclock for the dash.