The Lamborghini Diablo was already one of the wildest supercars of the 1990s, so turning one into an even more focused open-top machine takes some nerve. Eccentrica has done exactly that with its new V12 Roadster, a heavily re-engineered Diablo-based restomod combining classic supercar drama with modern chassis development.
The formula is refreshingly simple: remove the roof, keep the naturally aspirated V12, and let the driver change gears through a gated manual transmission. Eccentrica says the result produces 550 horsepower and can reach a claimed 208 mph.
This is not simply a Diablo with its roof chopped off and a few modern components added. The company says more than 3,500 bespoke parts are developed for each vehicle, with substantial changes made to the body, chassis, suspension, brakes, cooling, aerodynamics, and interior.
Production will also be extremely limited. Eccentrica plans to build just 19 examples of the V12 Roadster, with each car individually configured for its owner.
The Diablo Gets The Open-Air Treatment
Eccentrica worked with Milan-based design studio Borromeo De Silva to retain the unmistakable proportions of the original Diablo while giving the car a wider and more planted appearance. Much of the reconstructed bodywork uses carbon fiber, while the underlying steel space frame receives additional carbon-fiber reinforcement.
That extra structural work became particularly important once the roof disappeared. Eccentrica also carried out a dedicated aerodynamic study intended to control airflow around the open cabin and reduce unpleasant turbulence at higher speeds.
The involvement of former Lamborghini chief technical officer Maurizio Reggiani adds considerable credibility to the engineering program. Reggiani worked on Lamborghini models, including the Murciélago, Gallardo, Aventador, and Huracán, before becoming involved with Eccentrica’s Diablo project.
A 550-HP Naturally Aspirated V12
Behind the occupants sits a reworked version of the Diablo’s 5.7-liter naturally aspirated V12. Eccentrica rates the engine at 550 horsepower at 7,000 rpm and 443 lb-ft of torque at 6,500 rpm after changes to engine management, airflow, and cooling.
Those figures may seem modest next to today’s four-figure-horsepower hybrid hypercars, although raw output clearly isn’t the point here. Eccentrica is chasing the mechanical feel and character that made old-school supercars memorable in the first place.
The V12 sends its power through a close-ratio six-speed gated manual transmission, while hydraulic steering retains a more traditional connection between driver and front tires. Three selectable driving modes are available to alter the car’s behavior depending on conditions.
Fast Enough To Be Taken Seriously
Eccentrica claims the V12 Roadster weighs 3,395 pounds and can accelerate from zero to 62 mph in 3.8 seconds. Keep your foot down and the company says it will eventually reach 208 mph, which should be a particularly memorable experience without a roof overhead.
The chassis has also received revised suspension geometry and custom semi-active dampers. Brembo brakes use 15-inch front discs and 13.6-inch rear discs, with Eccentrica claiming the Roadster can stop from 62 mph in 111 feet.
None of these changes are intended to turn the Diablo into a sanitized modern grand tourer. The goal appears to be preserving its intimidating old-school personality while improving control, response, and overall capability.
Modern Craftsmanship Without Losing The Analog Feel
Inside, the Roadster combines Connolly leather and Alcantara with exposed carbon fiber and anodized finishes. Physical controls are an important part of the experience, helping the cabin retain the mechanical atmosphere expected from a V12 supercar with a gated shifter.
Every one of the 19 cars will be configured directly with its owner, making identical specifications unlikely. Pricing has not been announced, although the need for a donor Diablo and the extensive bespoke engineering involved suggest this will remain firmly in serious-collector territory.
The Eccentrica V12 Roadster is scheduled to make its public debut at The Quail, A Motorsports Gathering, on August 14, 2026. Among a field likely packed with technologically advanced modern exotics, an open-air Diablo with 12 naturally aspirated cylinders and a manual gearbox should have little trouble attracting attention.
Would you take this roofless Eccentrica over an original Lamborghini Diablo? Or does cutting the roof off one of the 1990s’ most iconic supercars go a step too far? Let us know in the comments.