These latest spy shots show the Mercedes-Benz S63 AMG, in a less disguised form than we've seen before, testing around the Nurburgring in Germany.

Like its predecessor, the S63 AMG is powered by a twin-turbocharged 5.5-litre V8 that is likely to offer a standard 536bhp, or 563bhp in combination with an optional performance package.

S63 AMGs destined for the UK will be rear-wheel drive, but other markets will get the option of the Mercedes four-wheel-drive 4matic system. Those opting for four-wheel drive will have their cars badged 4Matic.

Thanks to: Autocar