There’s something appealingly rebellious about the Mercedes-AMG G63, the most potent member of the Geländewagen family. It makes little logical sense to stick what is essentially a racing-car engine into a high-riding SUV that was ostensibly built to amble at mechanically-sympathetic (read relaxed) pace through rough and picturesque vistas. But nothing is relaxed about this monstrous Mercedes; not its belligerently get-out-of-my-way shape, and certainly not its brutal 430kW/850Nm V8 turbo engine which has thrust like a sports car and a bellow to wake the dead. From its squared-off styling to its duo of gutter pipe-sized exhausts exiting beneath the rear doors on each side, the G63 is all spitting aggression with the demeanour of a heavyweight cage fighter. Especially so in the matt-black paint job of our test vehicle.

When time recently came for Mercedes to bring out a modern second-generation G-Class after the original spent 35 years in production (albeit with several tweaks ...

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