Using the Mercedes-Benz G 63 AMG as the base car, the Gronos' engine has been modified by Mansory to develop no less than 840 hp and an electronically-limited torque of 1,000 Nm (738 lb ft).
These massive figures are possible thanks to new pistons, connecting rods, rod bearings crankshaft, cylinder heads and an entirely new exhaust system with double stainless steel tailpipes.
Mansory's work on the car didn't stop there though, and its light-capturing exterior and all-new interior are a testament of that.
Wearing entire slabs of carbon fiber body armor created in the in-house auto-claves that Mansory has in Brand, Germany, the Gronos is a rolling symphony of the lightweight material.
We have no word on the weight savings that all the carbon fiber on the car achieves, but it sure looks like pretty much no other G-Class now, especially since the entire design of the front end has been modified.
The model's interior is also unique, with Mansory creating an all-new center console that is also filled with carbon fiber and leather, while the rear bench has been moved further towards the rear and divided by a rather amateur-looking arm rest.
The upholstery is a concert of leather and Alcantara, with the surfaces still covered by unworthy materials like cloth or plastic being counted using fingers.
All in all, we are both impressed and appalled by the Mansory Gronos, but we're sure that the German tuner will have no problem selling every single model it makes.