Caught! Merc's hardcore luxury coupe

Tyre-bending performance and first class levels of luxury are mutually exclusive, right?

Not according to Mercedes-Benz. The German giant has been caught testing a new muscled-up AMG version of its S Class Coup, which was previewed in concept form at the Frankfurt Motor Show.

Sporting headache-inducing camouflage, early talk is power could come from AMG’s 5.5-litre, twin-turbo V8 which is likely to produce as much as 436kW.

More details as they come to light.

We're giving away the last great Aussie Holden V8! Enter here for your chance to win!

Sign up here to receive the latest round-up of Wheels news, reviews and video highlights straight to your inbox each week.