August 4, 2006 With its convertiable hardtop and softtop, the Mercedes SL500 is one of the most civilised of all luxury sports cars but with only 517 horsies, it’s a tad anaemic compared to the Koenigseggs and Paganis so … German tuning company Brabus has worked over the latest top-of-the-line Mercedes Benz SL500 to create the world's most powerful roadster. The reworked twelve-cylinder three-valve engine is increased from 5.5 to 6.3 litres to become the BRABUS SV12 S Biturbo and rated power output jumps from a standard 517 hp / 380 kW at 5,000 rpm to 730 hp / 537 kW at 5,100 rpm. Simultaneously peak torque grows from 830 Nm to 1,320 Nm, though custom engine mapping ensures peak torque is limited electronically to 1,100 Nm, which is available from 2,100 rpm onwards. Not surprisingly, performance of the two-seater is outrageous with a sprint time of 4.0 seconds from rest to 100 km/h, 10.5 seconds to 200 km/h, 29.5 seconds to 300 km/h and an electronically limited top speed of 350 km/h (217 mph).
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