The entire Mercedes-AMG GT line-up received an update not too long ago, and a new variant called the GT R Pro joined as well. The line-up was incomplete without a Roadster version of the “Beast of the Green Hell”. She’s now here and only 750 lucky ones will be able to add her into their collection.
The three-layered fabric soft top is supported by a light weight magnesium-steel-aluminium structure. A new shade called fine designo graphite grey magno matt paint extends the colour palette to a total of 14 choices.
The Roadster retains pretty much everything from its Coupe sibling, including active aerodynamics such as Airpanel and an underbody carbon-fibre element that automatically extends around 40 mm downwards depending on the drive program. As for weight reduction, there’s a 13.9 kg carbon-fibre torque tube, standard-fit AMG Performance forged wheels, carbon fibre tunnel brace, carbon fibre engine bay brace, titanium exhaust system which saves around 6 kg, tubular anti-roll bar at the rear axle, and some more.
As standard, the AMG GT R Roadster comes with AMG black carbon fibre/piano lacquer trim elements. Also included are fully digital instrument displays with an instrument cluster measuring 12.3-inches in front of the driver and a 10.25-inch multimedia monitor on the centre console.
The AMG Performance steering wheel comes as standard. The AMG drive programs as well as the AMG Traction Control can be actuated via the right-hand rotary controller which has an integrated LCD display.
As in the AMG GT R, the specially developed AMG coil-over suspension is also used in the open-top variant. Its tuning can be precisely adjusted at the workshop, says Mercedes. The technology from the motorsport is combined with the AMG Ride Control continuously variable, adaptive damping system. It adjusts the damping at each wheel automatically to suit the current driving situation, current speed and the road or track surface. Active rear axle steering is present too.
The 4.0 V8 biturbo delivers the same 430 kW (585 hp) at 6,250 rpm and 700 Nm of torque at 2,100 – 5,500 rpm. The Roadster accelerates from 0 – 100 km/h in 3.6 seconds – same as the Coupe, while the top speed is 317 km/h.
Different turbochargers with modified compressor processing and a smaller boost pressure control valve cell as well as sharper engine management application are used compared with those in the other AMG GT models, Mercedes said. The boost pressure has increased from 1.2 to 1.35 bar. In addition, the exhaust ports have been optimised and the compression ratio is modified. The entire combustion process has been retuned.
Dynamic engine and transmission mounts are installed as standard in the AMG GT R Roadster. They adjust their stiffness continuously and instantaneously depending on the driving conditions and handling. This function is performed by a special control unit, which identifies handling situations on the basis of CAN data, and is connected to the electronic limited-slip rear differential. The engine and transmission mounts are even actuated independently of each other, giving an additional improvement in driving precision and lateral dynamics.
High-performance composite brake system with discs measuring 390 mm on the front axle and 360 mm on the rear axle is included as well. The brake calipers are painted yellow as standard. Buyers can opt for a ceramic high-performance composite braking system which saves around 15 kg.