'Extreme' new car breaks cover! New 2027 Mercedes-AMG CLE Mythos is an ultra high-end, spiritual successor to the C63 AMG Black Series which puts the Porsche 911, Aston Martin Vantage and Ferrari Roma in its sights

Mercedes-AMG is readying the next instalment of its ultra high-end Mythos series of vehicles and it will be an “extreme” take on the CLE coupe.

This forthcoming and yet-unnamed Mercedes-AMG CLE Mythos is currently undergoing cold-weather testing in Sweden with heavy black-and-white camouflage to disguise the design features.

Compared to the regular, V6-powered AMG CLE53 which is currently the most powerful version of this car, it has very aggressive front and rear fascias for additional cooling, wider wheel arches for the wider track width, as well as a large rear wing.

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As reported by Autocar, it will be powered by a new 4.0-litre twin-turbo V8 petrol engine with a flat-plane crankshaft.

Mercedes-Benz will also reportedly use this new flat-plane V8 in the facelifted version of the S-Class, which is set to be revealed later today.

It will reportedly produce 395kW and 745Nm in the facelifted S-Class, however in this forthcoming CLE Mythos the outputs will be increased to over 484kW and 800Nm.

For context, the AMG GT63 Pro with its cross-plane crank 4.0-litre twin-turbo V8 engine produces 450kW and 850Nm.

2027 Mercedes-AMG CLE Mythos prototype

Flat-plane crank V8 engines are used in many Ferraris, McLarens, as well as the Chevrolet Corvette Z06 and allow for a lighter and smaller overall package, higher revs and sharper throttle response.

Mercedes-AMG’s first foray into a flat-plane crankshaft V8 was the limited-production AMG GT Black Series in 2020.

Given the Mythos line of vehicles is similarly focused on exclusivity and limited production, this will likely make the CLE Mythos the most direct successor to the C63 AMG Black Series from 2012. Only 800 units of it were made globally.

The first Mythos vehicle was the Mercedes-AMG PureSpeed which was revealed in 2024 and is a roof-less and windscreen-less version of the AMG SL roadster. Only 250 units are being made.