Thursday, July 9, 2020

Lamborghini's Most Powerful Roadster Packs 819 Horsepower


This is the Sián Roadster, a limited edition open-top hybrid super sportscar that’s the most powerful to ever come from Lamborghini. With its development centered around the V12 engine, it also packs a unique hybrid drivetrain. You want one? Well, that’s too bad. All 19 examples have been sold.

The Lamborghini Sián Roadster asserts the futuristic design of the coupe, but adds the purity of an open-air cabin experience. The aerial view of the Sián Roadster is evocative of the iconic periscopio line inspired by the first Countach, running diagonally from the cockpit to the rear and culminating in the aerodynamic airstreamers behind driver and passenger. The Sián’s long sculptured contours and characteristic aero wings give the Sián Roadster an unmistakably powerful profile. The car’s very low front, with integrated carbon fiber splitter, houses the iconic Lamborghini Y-shape headlights.

The extreme and strong rear of the car incorporates Lamborghini’s evocative hexagon design, including six hexagonal taillights inspired also by the Countach. The rear wing is integrated within the profile and extends out only during the driving to enhance the performance.

The low, powerful chassis houses a next-generation V12 powerplant: ‘Sián’ in local Bolognese dialect, meaning ‘flash’ or ‘lightening’, denotes the Sián Roadster’s electrification as part of the future hybrid strategy, while maintaining the extraordinary emotion and dynamic performance inherent in naturally aspirated Lamborghini super sports cars.



The Sián Roadster’s hybrid system provides the highest power possible via the lightest solution, combining the V12 engine with a new powertrain. A 48-volt e-motor, delivering 34 horsepower, is incorporated into the gearbox to provide immediate response and improved performance. The e-motor also supports low-speed maneuvers such as reversing and parking with electric power.

The Sián Roadster sports Lamborghini’s innovative supercapacitor application: a world-first technology storing ten times the power of a lithium-ion battery. Located in the bulkhead between cockpit and engine it ensures perfect weight distribution. Three times more powerful than a battery of the same weight and three times lighter than a battery producing the same power, the electric system with the supercapacitor and e-motor weighs only 34 kilograms. It is, according to Lamborghini, the most lightweight and efficient hybrid solution.

This advanced technology combines with the V12 engine, which incorporates titanium intake valves and is uprated to 785 horsepower at 8,500 rpm. Combined with the additional 34 horsepower from the hybrid system, the Sián Roadster delivers a total of 819 horsepower and reaches a top speed of over 350 km/h.



The Lamborghini Sián Roadster incorporates a highly sophisticated regenerative braking system, especially developed by Lamborghini. The symmetric behavior of the supercapacitor, which contrary to normal Li-Ion batteries can be charged and discharged with the same power, fully charges the Sián’s energy storage system every time the vehicle brakes. The energy stored is an instantly-available power boost, allowing the driver to draw immediately on increased torque when accelerating away, up to 130 km/h when the e-motor automatically disconnects, making it more than 10 percent faster than a car without this system.

The innovative system also delivers instant acceleration in low gears, with improved traction force provided by the combination of V12 engine and hybrid system. The Sián Roadster accelerates from 0 to 100 km/h in less than 2.9 seconds. The improvement in overtaking maneuvers is even more evident, for example traction force is improved by up to 10 percent in third gear.

The Sián Roadster makes its debut in Blu Uranus, especially selected by Lamborghini’s Centro Stile, which together with the Ad Personam department works with every Sián client to entirely personalize the color and finish of their Roadster.  Encapsulating the blue of the sky and the green of the fields, evoking the freedom and driving elation delivered by the open top Sián Roadster’s performance, the car is finished with Oro Electrum wheels: the color chosen by Lamborghini to signify electrification. The complementary interior is an elegant combination of white with Blu Glauco detailing and aluminum elements in Oro Electrum: new-design air vents produced via 3D printing allows customization with a client’s initials.

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