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Of course the car's interior was officially revealed through a few pictures that showed not mere cutaways but the real thing. Switchgear, the gear lever, the dashboard, the centre console and parts of the seats were clearly seen in those pictures.
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Mercedes-Benz has already announced engine details for the SLS. It uses a 7-speed double clutch transmission coupled with a 6.2-litre V8 of natural aspiration to produce 571hp (420kW) and 650Nm (479lb-ft) of torque. The 0 - 100km/h run will be completed in 3.8 seconds and top speed will be 315km/h.
McLaren Automotive which was Mercedes-Benz's partner in the development of the 2003 SLR McLaren supercar, are working on their own new challenger codenamed the P11 for this segment. However, engine and performance details have not been released.