For the 2021 model year, the mighty Mercedes-AMG E63 S was updated with fresher styling and a revamped interior. Under the hood, however, the super sedan's 4.0-liter twin-turbo V8 engine was unchanged. But with 603 horsepower and 627 lb-ft of torque on tap, the E63 S is one of the most powerful four-door sedans in the world. That hasn't stopped German tuner Brabus from taking it to absurd new levels after recently spicing up the new S-Class.

To extract more performance from the venerable V8 unit, Brabus has fitted new turbochargers with a larger compressor unit, reinforced axial bearings, and a maximum boost pressure of 1.6 bar. Using a plug-and-play module, Brabus has also remapped the injection, ignition, and boost pressure control.

To help the modified engine breathe more easily, carbon air intakes are integrated into the grille. As a result of these modifications, the engine produces an extra 188 hp and 111 lb-ft of torque, bringing the total output to 800 hp and 737 lb-ft of torque. This puts the AMG E63 S in supercar territory: 0-60 mph now takes just three seconds, down from 3.4 seconds in the stock AMG E63 S, while the wagon will cover the same sprint a tenth of a second slower.

It sounds more aggressive too, thanks to a stainless-steel high-performance exhaust system with four tailpipes available in stainless steel or carbon with adjustable flaps. Of course, no Brabus build is complete without some sporty styling enhancements to match the insane performance increase.

For the modified AMG E63 S, Brabus offers a range of naked-carbon components coated in either high-gloss or matte, including a front spoiler lip that reduces the front axle lift to improve stability, a rear trunk lid spoiler that generates more downforce, and a carbon diffuser insert. A set of custom 21-inch alloys wrapped in 255/30 ZR 21 tires at the front and 295/25 ZR 21 rear tires and a suspension kit that lowers the ride height by up to 0.8 inches complete the exterior modifications.

As for the interior, Brabus can fit stainless-steel scuff plates with a backlit Brabus logo that changes color in sync with the interior ambient lighting, as well as aluminum door pins and pedals. There's also a choice of leather and Alcantara upholstery options in a wide range of designs and colors. The Brabus 800 can be ordered as a sedan or wagon, or Brabus can convert your Mercedes-AMG E63 S into an 800-hp missile.