Mercedes SL 63 AMG: coming in April, with new 7-speed Speedshift transmission

Mercedes' high performance tuning subsidiary AMG has announced the April release of its sportiest-ever SL class Benz. The SL 63 AMG's 6.3-litre engine's now tuned for 525 horses and 660Nm, and even the most ham-footed driver can hit 100kmh in 4.6 seconds thanks to the AMG Race Start launch control package. Chilly temperatures don't have to put you off driving with the top down, as the AMG features a new "Airscarf" neck-level heating system, and the electronically adjustable suspension lets you strike the right balance between racetrack grip and touring comfort on the road. The transmission's a beauty - a four mode manual auto with superfast 100ms shifting and auto-double declutching on downshifts. And if this baby's not fast enough for you, there's always the SL 65 AMG biturbo V12.

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