Lamborghini Sian Roadster Unveiled, Is Already Sold Out

That time is long gone, especially since top-level supercars have recently been replaced by so-called hypercars, and the newly revealed Lamborghini Sian Roadster comes to reinforce that idea.

Essentially just a Sian FKP 37 with its top chopped off, the Sian Roadster is perfect for giving that toupee the ride of its life at speeds of over 350 kph (217 mph).

You can read that again, if you want, because unlike other Lamborghini cabriolets, like the Aventador Roadster or the Huracan Roadster, the new limited-edition hypercar has no roof whatsoever.

"The Sián Roadster encapsulates the spirit of Lamborghini,” says Stefano Domenicali, Automobili Lamborghini Chairman and Chief Executive Officer. “It is the expression of breathtaking design and extraordinary performance, but most importantly embodies important future technologies. The Sián’s innovative hybrid powertrain heralds the direction for Lamborghini super sports cars, and the open-top Sián Roadster affirms a desire for the ultimate lifestyle Lamborghini as we move towards a tomorrow demanding new solutions.”

Apart from the roofless solution to go on about your business in St. Tropez and the likes, the Sian Roadster is essentially identical to its coupe brother, including performance. That, and the fact that only 19 units will be ever produced.

Before you take out your checkbook, they’ve all been sold out already so maybe you should wait for a used one.

Powered by an evolution of the naturally aspirated Lamborghini V12, this time with titanium intake valves, the Sian Roadster would be good for a healthy 785 horsepower at a stratospheric 8,500 rpm. Except it’s not, because just like on its coupe brother, the Sian Roadster also benefits from an additional 34 horsepower from a fancy mild-hybrid system.

The total output is therefore 819 horsepower, which is more than enough for a 0-100 kph (62 mph) sprint of 2.9 seconds and the previously mentioned top speed of ‘over 350 kph (217 mph).’

We said fancy mild-hybrid system because Lamborghini engineers are the first to harness the energy output of a supercapacitor instead of a Li-ion battery on a road car.

Three times more powerful than a Li-ion battery with the same weight and three times lighter than a battery making the same power, the mild-hybrid system with the supercapacitor and electric motor weighs only 34 kg (75 pounds).