Mercedes doesn’t currently sell a convertible G-Class, but that has apparently done very little to discourage BRABUS.
The German tuner has unveiled the BRABUS 900 Rocket Edition Cabrio, based on the latest Mercedes-AMG G 63. It arrives shortly after BRABUS introduced its 800 Cabrio, but the Rocket goes considerably further: more power, more carbon fiber and the sort of performance numbers that seem slightly absurd when attached to something this tall. The car made its public appearance in Monaco as part of BRABUS’ 2026 Monaco Yacht Show programme.
The headline number is 900 hp.
BRABUS also quotes 1,250 Nm of torque, although the company electronically limits the amount actually sent through the drivetrain. Even so, the converted G-Class reaches 100 km/h in 3.7 seconds and continues to an electronically limited 240 km/h.
Those figures would be impressive in a sports car. In a G-Class Cabriolet, they sound faintly irresponsible.
Getting there requires considerably more than software. BRABUS has a long history of rebuilding Mercedes-AMG’s 4.0-liter twin-turbo V8 for its Rocket models, and the 900-hp specification sits well beyond the 585 hp produced by the current factory G 63.
The visual transformation is hardly shy either.
BRABUS has wrapped the G-Class in its familiar exposed-carbon treatment, with a more aggressive front end, wider bodywork and aerodynamic additions surrounding the squared-off Mercedes shape. Large BRABUS wheels fill the arches, while the stance is much closer to a road-going performance SUV than the military-derived off-roader that started the G-Class story decades ago.
Then somebody cut the roof off.
That’s the part that makes this conversion genuinely unusual. Turning a modern G 63 into a cabriolet means dealing with considerably more than removing sheet metal. The roof contributes to structural rigidity, so an open version requires substantial reinforcement elsewhere if the body isn’t going to behave like a cardboard box every time it hits a rough road.
BRABUS has already demonstrated that engineering with the 800 Cabrio. The Rocket Edition takes the same wonderfully unnecessary idea and adds another 100 hp.
Inside, the usual BRABUS approach applies. Customers aren’t limited to a handful of Mercedes trim combinations; leather colors, stitching, carbon details and numerous smaller elements can be individually specified. At this price level, finding another identical G-Class parked outside the same Monaco hotel would presumably constitute a minor emergency.
There’s also something slightly strange about the timing.
Mercedes itself moved away from the old factory G-Class Cabriolet years ago. Tuners have effectively rediscovered the format, partly because the current G 63 has become as much a luxury object as an off-road vehicle.
BRABUS has simply pushed that idea to its logical extreme.
Nobody needs an open-top G-Class with 900 hp, carbon-fiber bodywork and supercar acceleration. A standard G 63 is already fast enough to make its aerodynamics seem mildly alarming.
But necessity isn’t really relevant here.
The 900 Rocket Edition Cabrio exists because somebody wanted a G-Class that Mercedes doesn’t build, then decided the resulting 800-hp convertible still wasn’t excessive enough.
That is an unusually accurate summary of BRABUS.
