Lamborghini Sián Kicks Off Lambo’s Hybrid Era with 807 HP and a 218MPH Top Speed

As the fastest and most powerful Lamborghini ever, the Sián is a special beast and only 63 examples will be made.

Lamborghini's Sián (the name means "lightning") will be produced as a limited edition of 63, all of which are already sold.
The V12–powered hybrid makes 807 horsepower with combined thermal and electric power, including what Lamborghini claims is the world's first use of a supercapacitor in a hybrid.
Lamborghini claims a zeroto62mph time of less than 2.8 seconds and a top speed of 218 mph.

After eight years, the Lamborghini Aventador isn't done shocking the world with its jaggededge design and flamethrowing exhaust. Like the Veneno and Centenario, the new Sián is a hypercar built off a heavilymodified Aventador—only now, it's a hybrid.

That the Sián's electric motor contributes but 34 horsepower to an 807hp powertrain is the one puzzling stat. What, exactly, would anyone gain when the 6.5liter V12 is pushing 774 hp—15 more than the Aventador SVJ—the most ever from a Lambo engine? The engineers claim quicker midrange acceleration, better response between shifts, additional torque off the line up to 81 mph, and the convenience of parking a Lambo without the V12 engine sputtering and begging the driver to launch out of the garage. Bless the Sant'Agata team for prioritizing objectives in their firstever hybrid project. Engineers working on the first Honda Insight no doubt had similar wants and needs.

Based on the Terzo Millennio concept from 2017, the Sián uses a single supercapacitor stored in the bulkhead to store and expel electrical energy instead of thousands of miniature supercapacitors layered into its carbonfiber skin. The latter method isn't sciencefiction. Lamborghini has MIT scientists on the payroll figuring this out, some of whom undoubtedly contributed to the Sián's rear cooling vents and their patented "smartmaterial elements" that rotate using the exhaust heat. Unlike other 48volt hybrids where the electric motor can only provide assist with the gasoline engine running, Lamborghini claims the Sián is the first such hybrid where the motor—integrated into Lamborghini's sevenspeed automated manual gearbox—can power the wheels on its own at low speeds.

There's no lithiumion battery on board. The juice comes entirely from the supercapacitor, a setup Lamborghini has used since 2011 in conventional Aventador models to run their giant starter motors. Since the big V12 requires at least two full crank rotations before igniting during a cold start, the supercapacitor injects a headrush of current to move all that mass instead of drawing excessive loads from the 12volt battery. In the Sián, the supercapacitor—which unlike a battery can only store energy temporarily and release it in short bursts—has 10 times the capacity. It works on the same principle as Mazda's iELOOP system on family sedans that are roughly oneeightieth the price of the Sián.

We're still fresh from driving an Aventador SVJ across Connecticut, so it's almost incomprehensible to imagine another Lamborghini that surges harder onto a highway (the Sián can zap from 44 to 75 mph a full 1.2 seconds quicker than the SVJ, the company claims). But we can picture merging without the SVJ's violent gear changes, or as Lamborghini puts it, those "uncomfortable jerking movements." The Sián's electric motor fills the void between the Aventador's shotgunrecoil shifts. A simpler solution would be a dualclutch transmission like so many modern hypercars. Wait for the next one.

The Sián is the bridge between the Aventador and the Aventador's eventual replacement. Just as the Reventón previewed the Aventador while on a Murciélago frame, the Sián embodies everything Lamborghini will adopt on a future flagship. The sideways Yshaped running lamps integrated into the carbon ductwork, more air inlets blending into the headlight housings, and yet more intakes within intakes on the rear quarter panels should all be part of the next generation. Six separate taillights, emphasizing the car's dramatic width like some sort of mutant 1960s Chevy Impala, appear to float within the engine's radiator vents. As required, the Sián evolves Lamborghini's hexagon obsession with ever more interpretations of this classic shape, such as the exhaust pipes and the molding around the backup camera.
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