Like the coupe, there's a 6.5-litre V12 situated behind the passenger cell. Developing 566kW of power and with the rev limiter set to 8600rpm, the engine is connected to all four wheels via a seven-speed semi-automatic independent shifting rod transmission.
The Centenario roadster features carbon-fibre body panels and a carbon-fibre monocoque. Dry weight is claimed to be 1570 kilograms - 50kg more than the Centenario coupe - which was unveiled at this year's Geneva motor show.
The roadster is capable of sprinting from 0-100km/h in 2.9 seconds and hitting a top speed in excess of 350km/h. That's 0.1 of a second slower than the fixed-roof version.
As with the coupe, downforce is improved at high speeds thanks to a self-raising rear wing that can extend up to 150mm and rotate up to 15 degrees, while stopping ability comes courtesy of carbon ceramic brakes.
The Centenario rides on 20-inch alloys up front, and 21-inch rims at the rear. The car's Pirelli P-Zero tyres have been designed specifically to handle the rear-wheel steering system, which aids both low speed agility and high speed stability.
In a nod to practicality, the car's 10.1-inch touchscreen infotainment is compatible with Apple's CarPlay smartphone mirroring protocol. Additionally, Lamborghini says that the front windscreen has been shaped to reduce cabin turbulence.
Just 20 Lamborghini Centenario roadsters will be built. Despite a starting price of 2 million euros ($2.9 million) before tax, the entire production run is spoken for already.
The company is also making 20 Centenario coupes, priced from 1.75 million euros ($2.6 million). These too are also sold out.