The SLK55 AMG 'Black' represents the first in the line of Mercedes' new drivers specials. Mercedes ethos for the 'Black' edition is a more track oriented, faster, rawer driving experience with an even more aggressive stance than the 'basic' SLK AMG. Power is up by 40bhp, while weight is down by around 40kg. As a result the 0-60mph time drops to 4.4sec, onto a de-restricted 174mph top speed.
The AMG is stripped of it's electric roof, to be replaced with an appropriate black carbonfibre fixed unit. Recaro racing seats are fitted as is a muscular bodykit to complete the look.
The upshot is a slightly faster, better handling sports car, but for a hefty £26k premium - a 50% markup on the SLK55 AMG! It would be hard to justify such a premium even if the 'Black' were the epitome of executive sportscar handling, which it isn't.