Run for cover! The meanest...

Run for cover! The meanest Merc ever has broken loose!

This is the Mercedes SL65 AMG Black Series, the most powerful car ever to wear the three-pointed star.

Apparently not convinced that the current range-topping 518bhp SL63 AMG is hardcore enough, Mercedes asked in-house tuning arm AMG to come up with something a bit more raucous.

The result is an SL turned to 11, with a mind-blowing 661bhp and 1,000Nm of torque! And to make sure thereò€™s no confusing a Black Series with the ò€˜standardò€™ AMG car, the interior and exterior are completely reworked ò€“ the new car shares only five percent of its parts with the SL63.

As you can see, the 95 percent of unique parts are focussed entirely on enhancing performance. The front and rear bumpers are redesigned, the former to suck plenty of fresh air into the engine bay to cool the raging power plant down, and massive vents behind the wider front wheel arches improve airflow. A retractable electric rear spoiler sits at the back.

A carbon fibre hood, magnesium alloy wheels and a partially stripped out interior ò€“ making liberal use of carbon fibre and alcantara ò€“ combine with the power hike to provide mind-bending acceleration. The Black Series will hit 62mph from standstill in under four seconds!

A raft of mechanical changes further mark the SL65 AMG Black Series apart from lesser machines, and you can get all the details in Auto Express issue 1,021 ò€“ on sale Wednesday 16th July. Donò€™t miss it.