Lamborghini Diablo GT (1999)Rutger van der Maar, CC BY 2.0, via Wikimedia Commons

Lamborghini Diablo GT 6.0 GT

1999 — Italy

Modern Classic (1986-2000)SupercarItalianV12 EngineMid EngineUnder 100 ProducedInvestment GradeRally LegendsHomologation SpecialsMillion Dollar ClubLimited ProductionDesign IconsOver 500 HorsepowerNaturally Aspirated LegendsItalian Exotics
Engine5,992 cc V12 DOHC
Power575 hp
Torque465 lb-ft
Transmission5-speed manual
DrivetrainRWD
Body StyleCoupe
Weight3,075 lbs
0–60 mph3.6 sec
Top Speed210 mph
Production83 units
Original MSRP$330,000
BrakesVentilated Disc / Ventilated Disc
SuspensionIndependent, double wishbones, coil springs, adjustable dampers / Independent, double wishbones, coil springs, adjustable dampers

Lamborghini Diablo GT 6.0 GT

The Lamborghini Diablo GT, produced in just 83 examples from 1999 to 2000, represented the absolute pinnacle of the Diablo range. Developed under Audi's new ownership, the GT was essentially a road-legal version of the Diablo GTR racing car, with a massively powerful 6.0-liter V12 engine and aggressive aerodynamic bodywork that pushed the boundaries of what was acceptable on public roads.

The GT's engine was the largest and most powerful naturally aspirated V12 Lamborghini had ever fitted to a production car at that point, displacing 5992cc and producing 575 horsepower at 7300 rpm. The increased displacement came from both bore and stroke increases, and the engine featured revised camshafts, lighter internals, and a free-flowing exhaust system. Unlike the all-wheel-drive VT and SV models, the GT sent all its power exclusively to the rear wheels, creating a driving experience that demanded respect and skill.

The bodywork was significantly modified from the standard Diablo, with a new front bumper incorporating larger air intakes, extended side skirts, a fixed rear wing with adjustable angle, and a redesigned rear fascia. The overall effect was dramatically more aggressive than the standard car, signaling the GT's track-focused intentions clearly. The body panels were made from a combination of carbon fiber and composite materials to reduce weight.

Inside, the GT was stripped to essentials. Air conditioning was deleted, as was most sound insulation. Lightweight racing seats replaced the standard items, and an exposed carbon fiber dashboard replaced the leather-trimmed original. The overall effect was spartan but purposeful, every element serving the goal of reduced weight and improved performance.

The driving experience was extraordinary and deeply intimidating. With 575 horsepower sent exclusively to the rear wheels through a manual five-speed gearbox, the Diablo GT demanded absolute concentration and precise inputs. The steering, without power assistance, was heavy at low speeds but loaded with feedback. The suspension, firmed for track use, transmitted every road surface detail directly to the occupants.

With only 83 examples produced, the Diablo GT is one of the rarest and most desirable of all Diablos. It represents the most extreme expression of a model line that defined the supercar world through the 1990s, and its uncompromising character makes it a fascinating counterpoint to the more refined supercars that would follow in the digital age.

$700,000 – $1,500,000

With only 83 made, provenance is critical. Verify chassis number against Lamborghini records. The high-output V12 requires meticulous maintenance. Check for track use signs (stone chips, brake dust deposits, suspension wear). Carbon fiber bodywork is expensive to repair. The lack of power steering and AC makes the car demanding in normal use. Complete service documentation is essential.

Only 83 units were produced from 1999-2000. The GT was the most extreme road-going Diablo ever built. Developed under Audi ownership as a homologation special for the Diablo GTR racing program. RWD only (no all-wheel drive). Carbon fiber body panels. Deleted air conditioning and most comfort features. The 6.0L V12 was the most powerful naturally aspirated Lamborghini engine at the time.