Brabus PowerXtra B40S-750: The AMG GT 63 Gets a Rowdy 740bhp Makeover

The second-generation Mercedes-AMG GT 63 has stirred quite a debate since its debut. Weighing in at over 300kg more than its predecessor and now a 2+2 grand tourer, critics argue it’s perhaps too grown-up. Brabus, the renowned German tuner, with their answer: the PowerXtra B40S-750 package.

It’s not exactly the snappiest name it sounds like a mid-2000s flip phone but what Brabus has done to this AMG is far more exciting. They’ve essentially given it a muscle-flexing makeover to inject some old-school mischief back into the GT 63.

A Bolder Look

Let’s start with the visuals. Brabus has thrown on a suite of aggressive bodywork tweaks that make the already imposing AMG look downright menacing. New inserts for the radiator grille, sleeker splitters, attachments behind the front wheel arches, and a subtle rear spoiler all come crafted from carbon fibre, the good stuff not Lindt chocolate, to be clear.

The standard quad exhaust system is replaced with electronic valve-controlled stainless steel pipes, ensuring it growls with purpose. Completing the look are massive forged 22-inch Monoblock ‘Platinum Edition’ alloys, filling out the arches perfectly. Brabus also drops the ride height by 25mm thanks to sports springs, adding more aggression to the car’s stance.

Serious Performance Gains

Brabus didn’t just stop at looks—they tinkered under the hood too. The result? A mighty 740bhp and 664lb ft of torque squeezed from the familiar 4.0-litre twin-turbo V8. That’s a noticeable step up from the stock GT 63 S, cutting its 0-62mph time to a blistering 2.9 seconds. While the top speed remains at 196mph, the Brabus-tuned beast is undeniably sharper off the line.

Interestingly, the hybrid GT 63 S E Performance still edges it out slightly, but Brabus enthusiasts likely won’t mind. This package is about attitude as much as raw numbers.

Interior Luxury, Brabus Style

Inside, Brabus hasn’t held back on its signature refinements. Entry panels feature illuminated Brabus logos, while exposed carbon or aluminium pedals add to the sporty vibe. Plush leather dominates the interior, including custom mats, while Brabus offers virtually endless customization for seat upholstery and trim finishes. If you want your AMG to feel as unique as it looks, Brabus has you covered.

How Much for All This Brabus Brilliance?

The price tag for the PowerXtra B40S-750 is as striking as the car itself: €318,000 (around £262,000 for UK buyers). That’s a serious premium over the standard AMG GT 63 S, but Brabus buyers know what they’re getting: exclusivity, brawnier performance, and that unmistakable Brabus flair.

So, is it worth the price? For those who think the AMG GT 63 has grown up a little too much, Brabus just might have delivered the perfect antidote. After all, this is a car that looks as wild as it feels—and that’s something money can buy.