This is the new 564bhp Mercedes SL63 AMG, which was probably introduced for the sole purpose of giving Top Gear something to test BMW’s new M6 against. And on paper, it seems worthy competition:
If you opt for a regular SL63, you’ll benefit from 537bhp and 590lb ft of torque, a 0-62mph time of 4.3 seconds and a limited top speed of 155mph. Opt for the AMG Performance Pack, and that power jumps to 564bhp, 664 torques, a 0-62mph time of 4.2 seconds and a limited top speed of 186mph. Clearly, this latter figure is a little bit more than the new, 552bhp BMW M6, and thus the one you want.
More info at TopGear.com
So, which would you back in a fight? The new SL63 AMG or the new M6?