Lamborghini chopped off the Sián’s top to create its most powerful convertible model to date. The limited-edition Sián Roadster features an innovative hybrid powertrain and a wide panoply of customization options.
Viewed from the front, the Roadster is nearly identical to the Sián coupe introduced at the 2019 edition of the Frankfurt auto show. Its long, low nose wears a carbon fiber splitter and Y-shaped LED headlights. It’s the same story out back, where the shape of the lights again draws a subtle parallel between the Sián and the Countach built between 1974 and 1990. The engine remains visible through a horizontal wings made with carbon fiber, but they’re flanked by deep scoops that start right behind the occupants and flow into a set of air vents.
Surprisingly, the Roadster is just as aerodynamic as the coupe. Autoblog learned it will not come with any kind of roof.
Technology reigns supreme in the cabin. The driver sits in front of a digital, configurable instrument cluster, and a touchscreen integrated into the slanted center stack displays the infotainment system Lamborghini designed in-house. The air vents are 3D-printed, and buyers can customize them by adding their initials. Nearly every part of the interior can be personalized, including the upholstery and the type of the materials used to make trim pieces.
Mitja Borkert, the head of Lamborghini’s design department, previously promised no two examples of the Sián coupe will be identical. It’s reasonable to assume that every Roadster will be equally unique.
The Sián lost its top without losing any of its mechanical panache. The Roadster is identical to the coupe, meaning it’s equipped with Lamborghini’s first production-bound hybrid system. The powertrain consists of a mid-mounted, naturally-aspirated V12 engine and an electric motor integrated into the transmission. It draws electricity from a supercapacitor to inject 34 horses into the driveline, bringing the setup’s total output to 819 horsepower. Lamborghini quotes a 2.9-second sprint from zero to 62 mph, and a 217-mph top speed.
Using a supercapacitor instead of a lithium-ion battery pack is not the easiest or cheapest way to build a hybrid, but engineers claim it’s the best solution. It’s three times more powerful than a battery with a comparable weight; put another way, it’s three times lighter than one with a similar power output. It stores enough electricity to let the motor power the Sián at ultra-low speeds, like when parking or backing up. More important, the jolt of electricity it sends to the wheels ensures the car continues to accelerate even when the transmission is changing gears.
Engineers found ingenious ways to cool the drivetrain. For example, the cooling vanes integrated into the rear end are made with a patented material that reacts to heat. They gradually rotate open as the exhaust gets hotter.
Lamborghini will make 19 examples of the Sián Roadster, and they’re all spoken for. Pricing hasn’t been announced, but the coupe model (which is sold out, too) allegedly starts at $2 million before options. Enthusiasts who want to add the Sián to their collection will need to wait until a used example comes up for sale. In the meantime, they can pick up a 23-inch long, 3,696-piece Lego Technic replica, or they can spend $3 million on one of the 63 Sián-inspired, 4,000-horsepower yachts an Italian shipbuilder named Tecnomar will launch starting in 2021.