2009 Mercedes-Benz SLR McLaren Roadster.
This model is the result of an engineering collaboration between the two companies, combining an open-top body design with outstanding aerodynamic and high-speed performance.
The engineers managed to preserve the base coupe’s structural rigidity against torsion and bending by integrating a soft-top mechanism without compromising handling.
The car is equipped with a 5.4-liter V8 engine.
The factory-rated power output is 626 horsepower, and peak torque is 780 Nm.
Unlike similar supercars of that era, which used high-revving naturally aspirated engines, this model employs a mechanical screw supercharger, which provided stable torque at low RPMs; the specific layout required routing the exhaust system through side pipes behind the front wheels.
The car uses a reinforced 5-speed AMG Speedshift R automatic transmission and a rear-wheel-drive system.
During the project’s development, when robotic transmissions were already widely used in motorsports, the engineers opted for a classic planetary design due to the need to handle extreme torque.
Acceleration from 0 to 100 km/h takes 3.8 seconds, and the top speed reaches 332 km/h.
In its class, the Roadster demonstrates outstanding dynamics, largely thanks to intelligent weight distribution, which offsets the increased weight caused by the roof mechanism.
The exterior body panels are designed to meet stringent aerodynamic requirements.
Optimization of airflow is ensured by a developed front splitter, a smooth underbody, and a six-channel rear diffuser.
Asymmetrical lightweight alloy wheels function as turbines to direct heat away from the carbon-ceramic brake systems.
A key aerodynamic feature is the active rear spoiler, which automatically adjusts its angle of attack during heavy braking to create an air brake effect and increase downforce on the rear axle.
The interior is built around a central carbon-fiber monocoque, the weave of which is left exposed on the center tunnel.
The cabin trim features finely tanned semi-aniline leather, Alcantara, and polished aluminum elements.
The seat frames consist of one-piece carbon fiber buckets with interchangeable cushions of varying thicknesses, and the factory customization program allowed owners to extensively personalize color schemes and material textures.
Engine: 5.4 L, V8, mechanical supercharger Power: 626 hp / 780 Nm Transmission: 5-speed automatic Drive: Rear-wheel drive 0–100 km/h acceleration: 3.8 s Top speed: 332 km/h Body: Roadster (carbon-fiber monocoque) Manufactured in: United Kingdom (McLaren Technology Centre) The Mercedes-Benz SLR McLaren Roadster is a precision-engineered vehicle in which motorsport technology blends harmoniously with a high level of classic luxury.