From the company press release about this Wiesmann Roadster MF4:

The summer will be exhilarating: The Wiesmann Roadster MF4 enriches the Wiesmann model range with a new inexpressible driving experience full of dynamic and agility. The Wiesmann Roadster MF4 has the typical sound of the 8-cylinder engine that powers it. So what distinguishes it from other cars? Obviously, this new engine turns the Roadster MF4 into a powerhouse with enhanced driving properties such as irresistible acceleration and the unique capability to transmit its enormous power directly to the road. The customer has a choice of two engines: a high-torque 4.8 litre V8 engine with 367 hp (270 kW) and – the same engine that is built into the Wiesmann Roadster MF4-S – a high-revving 4.0 litre V8 which delivers 420 hp (309 kW). The gearing variants are certain to raise the pulse rate of true sports car fans: Alongside the manual and sport automatic, a 7-speed double clutch system is also available for the 420 hp version.

Whether by moderate driving down a normal street or a more intense drive along a winding B-road, the MF4′s spellbinding agility and driving dynamic are immediately appreciable. Accompanying this is a driving performance in a class of it’s own: With a maximum torque output of 400 Nm and a power to weight ratio of 3.1 kg/PS the Roadster MF4-S can accelerate from a stand still to 100 kph in just 4.4 seconds.. Lateral acceleration while cornering is transferred directly to the cockpit thanks to the low-slung position of the seat, just ahead of the rear axle. The MF4 is capable of reaching a top speed of 300 kph. For safety purposes the Wiesmann Roadster MF4 is based upon a stiff aluminum monocoque chassis with integrated side impact bars and is equipped with driver and passenger airbags as well as series standard ABS that functions in combination with a dynamic stability control (DSC) system.