On the face of it, putting a 544PS engine into a tall off-roader sounds a bad idea. No, scrub that. It sounds an absolutely certifiable notion. The Mercedes G 63 AMG is that car and it's the flagship model in the G-Class range, for the UK at least. Those looking for an even more powerful G-Class will have to shop abroad for the G 65 AMG. My advice would be to stick with the 63. It's a great engine, this 5.5-litre twin-turbo V8 and it clouts the G 63 to 60mph in a blink over five seconds and onto an electronically limited top speed of 130mph. Believe me, you wouldn't want to go faster, despite improvements to the car's suspension, stability control system, monster 375mm brakes up front and the clever AMG SPEEDSHIFT PLUS 7G-TRONIC automatic gearbox.
The G 63 AMG might hog the headlines but the G 350 BlueTEC long-wheelbase model with its 2987cc diesel engine offers a touch more real-world relevance. This four-valve per cylinder engine has an output of 211PS at 3400rpm and has available torque of 540Nm across an engine speed range of 1600 to 2400rpm. Whichever version you buy, that mountain of torque should be adequate to drag you out of most sticky situations, while the G-Class' three electrically controlled 100-percent differential locks, ladder frame and rigid axle characteristics also underline its mettle in rough off-road terrain.