Lamborghini Diablo VT

After three years of making minor adjustments to the standard Diablo, Lamborghini decided in 1993 that a second, even more specialized version of the car could add new customers to the brand. Starting with the basic Diablo platform, Lamborghini engineers added a viscous-coupling type all-wheel-drive system, an improved power steering system, resized front wheels and tires chosen to work better with the all-wheel-drive system, four-piston Brembo brake calipers, an updated dashboard design and a new computerized suspension system featuring aggressively tuned Koni shock absorbers. The suspension system could be left in "auto" mode where it was controlled entirely by the computer, or any of four separate "modes" could be manually selected by the driver via buttons in the cabin. The vehicle still lacked ABS brakes.

Lamborghini had presented an open-topped concept version of the VT (Viscous Traction) at the 1992 Geneva Auto Show alongside the coupé when the car debuted there, but it was another 3 years before the model saw production. Other than its removable Targa-style carbon fiber roof panel, the vehicle was essentially identical to the coupé, with only a few minor styling differences, mainly in regards to the tail lights between the two models.

The second version of the VT coupé and roadster added mostly cosmetic and styling changes. The cars now featured the SV's exposed headlamps, new wheels and a newly redesigned dashboard. On the mechanical side, larger brakes, the long-overdue addition of ABS brakes and a new variable valve timing system on the 5.7 litre V12 were the only mechanical updates. Power output increased to 530 horsepower (395 kW), dropping the car's 0-100 km/h time to 3.9 seconds. Despite the money Lamborghini had spent making the updates, the "Version 2" VTs were discontinued after only one year of production.

After Audi AG took over Lamborghini from South East Asian owners, Mycom and VPower in1998, they set out to make major revisions to the Diablo so that it could continue to provide revenue while its replacement was developed. The VT 6.0 was their first (and last) truly intensive redesign of the car, meaning that it was more than just a cosmetic update to the existing model. Heavy styling changes both inside and out were made; the front bumper, air intakes and nose as well as the entire dashboard, seats and switchgear were changed and improved. Displacing 6.0 litres and based on the motor that powered the Diablo GT, which in itself was essentially a modified version of the 5.7, the motor had updated ECU software in addition to new intake and exhaust systems and a refined variable valve timing system with slightly less aggressive camshafts than had been used in the earlier versions.