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The full-fat AMG version of the Mercedes-Benz GLE Coupe was teased, no, almost completely revealed last week. Now Stuttgart has dropped the full details of its new BMW X6 M fighter, christened the Mercedes-AMG GLE 63 Coupe, ahead of the car’s debut at the upcoming 2015 North American International Auto Show (NAIAS) in Detroit.

As expected, the pumped-up low-slung SUV makes use of AMG’s current 5.5 litre twin-turbo V8, producing 557 hp at 5,750 rpm and 700 Nm of torque from 1,750-5,500 rpm. That power goes straight to the tarmac via a seven-speed AMG Speedshift Plus 7G-Tronic automatic transmission and 4Matic all-wheel drive, resulting in a 0-100 km/h time of just 4.3 seconds, and on to an electronically-limited top speed of 250 km/h.

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A trifle, you say? You can opt for the spicier GLE 63 S, bumping power to 585 hp at 5,500 rpm and a ridiculous 760 Nm from 1,750-5250 rpm. This shaves 0.1 off the sprint time to 100 km/h, sitting at 4.2 seconds. Both models deliver a combined fuel consumption figure of 11.9 litres per 100 km and produce 279 g of carbon dioxide per km. As if you’d concern yourself with these things is you bought one of these.

Keeping the performance under control is the Airmatic air suspension with AMG Ride Control – adding special damper struts, automatic level control and ADS Plus adaptive damping – as well as a roll-stabilising Active Curve System. There’s also an AMG-specific variable-ratio Sports Direct-Steer system, revised front-axle elastokinematics, a strengthened rear stabiliser bar and an AMG high-performance braking system.

The aesthetics have been hardened up to suit the muscle. Starting with the exterior, there’s the deeper front fascia with the AMG dual-bar grille, larger air intakes and the characteristing “A-wing”, flared wheel arches, a tailgate lip spoiler as well as a rear diffuser with drag-reducing air outlets and quad tailpipes. Finishing off the mean new look are staggered 22-inch AMG cross-spoke light-alloy wheels.

Inside, Affalterbach has added sports seats upholstered in perforated nappa leather, a smaller three-spoke Performance steering wheel with aluminium shift paddles, a Dynamic Select rotary controller to adjust the car’s performance characteristics as well as an AMG-designed instrument cluster with a Racetimer.