Mercedes-Benz recently gave the SLS AMG supercar a little upgrade and is still working on an even faster version of the Gullwing under its Black Series badging.

Check out more news on the Mercedes-Benz SLS AMG.

A video has popped up on YouTube showing the new Mercedes-Benz SLS AMG Black Series undergoing testing at the Nurburgring Nordschleife track.

So far, we have heard that the SLS AMG Black Series will be powered by a 6.3 liter V8 engine making 650-hp. the 0 to 60 mph time is expected to come in around 3 seconds with a top speed of more than 200 mph. Of course, there will be a stiffer suspension, better handling and bigger brakes.

Check out the footage after the jump.

- By: Omar Rana