Lamborghini Fenomeno Roadster: Brand's fastest ever open-top model revealed

The Lamborghini Fenomeno Roadster is a new limited edition model, and will be the brand’s fastest ever open-air model.

Like the Fenomeno coupe that was unveiled last year, the roadster is a “few off” model based on the Revuelto featuring unique body work and an upgraded hybrid V12 drivetrain. Production of the roadster will be limited to just 15 units, while last year’s coupe had a slightly larger run of 29 cars.

According to Lamborghini, the roadster has a “similar level of stiffness and rigidity” compared to the coupe thanks to a bit of additional bracing and a few kilograms of extra weight.

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To ensure the roadster has the same level of downforce and engine cooling as the coupe, Lamborghini has tweaked the car’s aero package. There’s a new spoiler at the top of the windscreen that minimises buffeting inside the cabin and feeds air into the V12 engine, and essentially replaces the coupe’s roof scoop.

The company also paid particular attention to the roll over bars, which are shaped to both minimise wind noise and turbulence, and fit in aesthetically with the flowing design of the rear.

Powering the Fenomeno Roadster is an uprated V12 hybrid system featuring a naturally-aspirated 6.5-litre V12 making 614kW and 725Nm. It is paired to two electric motors at the front, and one in the rear-mounted eight-speed automated dual-clutch transmission.

The 7kWh lithium-ion battery is double the size of the one used in the Revuelto, and allows for some emissions-free driving.

Working altogether the drivetrain generates a total of 794kW, and enables the Fenomeno Roadster to race from 0-100km/h in 2.4 seconds, hit the double century in 6.8 seconds, and have a top speed of over 340km/h. For those comparing notes, the coupe has the same 0-100km/h time, is 0.1s faster to 200km/h, and has a top speed over 350km/h.

It rides on 21-inch alloys with specially-developed Bridgestone Potenza Sport 265/30 tyres up front, and 22-inch alloy wheels with 355/25 rubber at the rear. Buyers can also opt for either run-flat tyres, or road-legal semi-slick tyres paired with smaller 20- and 21-inch wheels.

Stopping ability comes from CCM-R Plus carbon-ceramic brakes, while the standard racing shocks can be manually adjusted.

To help optimise the car’s dynamics, the Fenomeno is fitted with a new ‘6D sensor’ close to the car’s centre of gravity. It keeps track of lateral acceleration of all three axes (lateral, longitudinal and vertical), as well as angular velocity on all three axes (pitch, roll and yaw).

This data is fed into the Integrated Vehicle Estimator (IVE) and Integrated Brake Controller (IBC), and can reduce braking distances by 10 per cent.

The Fenomeno is the latest in the line of “few off” models that began, essentially, in 2009 with the Reventon. This was followed up in 2013 with the Veneno, then the 2016 Centenario and 2019 Sián, all of which also received roadster variants.

MORE: Explore the Lamborghini Revuelto showroom