With 630 horsepower on tap, the Mercedes-AMG GT63 S is the most robust production model to take the three-pointed star outside of the One hypercar. With Brabus being Brabus, we’re not at all surprised the German tuner has decided to take the twin-turbo 4.0-liter V8 engine to a completely new level. Debuting at the Top Marques Monaco tomorrow, the sinister sedan is prepared to unleash an epic 789 hp – or an additional 159 ponies over the standard model from Affalterbach.

 

Brabus also increased the torque figure to a nicely rounded four-digit number: 1,000 Newton-meters (737 pound-feet). As a result of fiddling with the eight-cylinder engine, the beefy AMG sedan can now complete the 0-62 mph (0-100 kph) journey in only 2.9 seconds or three-tenths of a second faster than the regular car. Take it to the max and an electronic top speed limiter will kick in at 196 mph (315 kph), which is the same as the factory car.

If you’re surprised how Brabus was able to unlock the extra power, the recipe was very large. It comprised of the tuner’s own larger pair of turbochargers, remapping the engine’s ECU, and doing some software wizardry.

 

To stand out from the regular GT63 S, the Bottrop-based aftermarket specialist created many body parts that finished in naked carbon and optimized them the wind tunnel for maximum aerodynamic efficiency. Goodies include a new front spoiler together with attachments for the air intakes, along with a rear diffuser housing the menacing quad tips part of the tuner’s sport exhaust system with titanium finishers.

 

The side profile discloses a tailor-made set of 21-inch front and 22-inch rear wheels with a fresh 10-spoke design never seen before on any other Brabus project. A plug-and-play device for the car’s air suspension allows owners to minimize the AMG by roughly 25 millimeters (nearly one inch) to lend the sedan an even more aggressive stance.

Inside, there’s a lovely combination of leather and Alcantara available in all colors. Those who want to spend more can ask Brabus to throw in some real carbon inlays or even wood accents. The show car heading to Top Marques Monaco has received a perforated leather upholstery with white stitching and accents, plus Alcantara inserts noticeable on the side bolsters. Rounding off the tweaks are the illuminated door sills with the tuner’s logo in a color that matches the cabin’s ambient lighting, while the aluminum door pins and pedals complete the look.

You can buy the speedy Mercedes as a fully equipped car straight from Brabus or send an existing vehicle to get some upgrade or a complete makeover.

The 16th edition of Top Marques Monaco will start tomorrow, May 30, until June 3. The last day’s entry will be based on invitation only.

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