Prototype Drive
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My, what big portal axles you have.
For many years, killing off the Mercedes-Benz G-class was a recurring topic at Daimler board meetings. The boxy off-roader, an offspring of a vehicle developed for military applications, simply came from another era. Weren’;t there better, modern SUVs in the lineup?
More recently, the topic has disappeared from agendas. As luxury customers seek vehicles that are both distinctive and which exhibit some actual authenticity, G-wagen sales are better than ever. Indeed, with 14,000 units sold last year and some hefty profit margins built in, Daimler has started having fun with the G—so much fun, in fact, that it has authorized a considerable budget for low-volume derivatives.
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2 years ago, the world was flabbergasted by the G63 AMG 6×6, a non-U.S.-market variation based on a project for the Australian armed forces. There was one problem: Impressing folks with the 6×6 may be a breeze in the deserts of the Middle East, but not so much in European inner cities. It takes considerable skill to direct that 3-axle behemoth with anything resembling grace.
It will be far easier to pose and maneuver in the G500 4×4², a prototype of which we just drove. Daimler won’;t yet officially confirm series production, but with more than 100 units of the hyper-expensive 6×6 having been sold—far beyond expectations—before production ended, the potential for this similar new model is considerable.
The exclusive, common denominator between the G63 AMG 6×6 and the G500 4×4² is the portal axles, which use gears in the hubs to allow the axle to sit higher than the wheel centers in the name of increased ground clearance. The result is a vehicle that can clear 17.7-inch-high obstacles, versus the 8.3 inches of a stock G, as well as ford water up to 39.4 inches deep. The front and rear tracks are also wider by 11.8 inches, and while the standard G-wagen is relatively narrow, this variant comes in at 82.7 inches wide—still not so much that urban driving becomes a chore. On the other hand, its height of 88.6 inches will render many parking structures forbidden territory.
The regular G-wagen seems hard to beat off the road, but thanks to the portal axles, the 4×4² pushes the boundaries of capability to new extremes. We tested the prototype in a half-dry riverbed and on steep, rocky slopes that forced the regular model to throw in the towel—the mega ground clearance and the massively superior approach, departure, and breakover angles of the 4×4² allow for scrambling over even the gnarliest terrain. And thanks to the wide track, it feels stable and planted, with a tip-over point virtually unchanged from the basic G. Helpfully, you can opt for off-road-sized 37-by-12.5-inch mud-terrain tires on 18-inch beadlock wheels; these can be swapped out for 325/55 rubber on 22-inch wheels for on-road pursuits.
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On pavement, of course, the G500 4×4² can’;t perform miracles. Its electronically controlled dampers can be switched between Comfort and Sport settings, and doing so makes a discernible difference in ride and handling, but the steering remains as vague and imprecise as in any other G-wagen. In a straight line, however, the thing moves out with alacrity, thanks in large part to the brand-new, twin-turbocharged 4.0-liter V-8, which is derived from AMG’;s M178 engine. It will show up in many Mercedes-Benz cars in the future, and launching it in a G-class prototype speaks volumes to the importance of this SUV model. Rated here at 416 horsepower and 450 lb-ft of torque, the new V-8 is likely to yank the 4×4² to 60 mph in less than 6 seconds, while top speed is rated at 130 mph (Daimler advises that you keep it under 100 mph with the off-road tires fitted). The near-explosive power is underscored by a soundtrack worthy of an AMG, which is trumpeted by dual side pipes that exit ahead of the rear wheels on both flanks.
These side pipes merely accentuate the ultra-aggressive styling, which comes as a welcome result of the jacked-up, wide-track suspension. The wheel arches are made of carbon-fiber composite, and the front fascia is taken directly from the G63 AMG and the G65 AMG. Pricing, by the way, will be somewhere between these 2 models—if the board decides to move forward on building the thing. We would be very surprised if they don’t—it’s too impressive and bad-ass not to.
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Driven: Insane Mercedes-Benz G500 4×4²!
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