Mercedes G63 AMG 6x6

[Wretched]

AUTOCAR article

What is it?

The largest and most extreme road legal SUV to ever hail from Mercedes' road car operations – the lunatic six-wheel Mercedes G63 AMG 6x6.

Set to be produced on a limited basis by Mercedes-Benz's Austrian partner Magna Steyr from the third-quarter of 2013, the colossal double-cab pickup started life as an even more rugged military version of the G320 CDI conceived and engineered for the Australian army and in operation since 2011.

This plush, leather-lined civilian version of the off-road vehicle has been conceived to appeal to some of Mercedes-Benz's most affluent clientele. It features six driven wheels, low range gearing, five differential locks and a tyre control system for its standard 37-inch wheels. Mercedes says it is "the last word in forward-thrusting power for the beaten track".

Pricing hasn't been announced, but the head of Mercedes-Benz G-class development, Axel Harries, suggests the G63 AMG 6x6 will be Mercedes-Benz’s second most expensive model behind the new SLS Electric Drive when official sales get underway in October around the £350,000 mark.

Unlike the military version of the G320 CDI 6x6, which is fitted with Mercedes-Benz's 3.0-litre V6 diesel and is offered in outputs of up to 220bhp, the G63 AMG 6x6 gets a twin-turbocharged 5.5-litre V8 from AMG with 536bhp. Torque is a 560lb ft – crucial in providing the shove required to haul the big four-seater’s considerable 3775kg kerb weight.

Mercedes' 7G-tronic seven-speed automatic transmission is fitted in place of the old NAG1 five-speed auto 'box found on the army version. Its transfer case can alter between a 0.87:1 high-range ratio for on-road driving and 2.16:1 low-range ratio for off-road conditions to all six wheels in a nominal 30:40:30 split. Power for the rearmost axle is supplied by an extra shaft. There are five electronic differential locks offering 100 per cent lock up of all six wheels, operated by three switches on the dashboard.

Relaying the engine's strong reserves to the ground are massive 37-inch wheels featuring a bead-plate design. They are shod with 12.5in-wide wheels.

At 5875mm in length, 2110mm in width and 2210mm in height, the G63 AMG 6x6 is 1106mm longer, 225mm wider and 272mm higher than the G63 AMG. Along with a 300mm increase in the wheelbase through to the middle axle at 3120mm, the front and middle axles have increased in width by 281mm each at 1790mm, requiring widened and lengthened carbonfibre guards to cover the huge wheels.

Ground clearance is a whopping 460mm while fording depth is put at 1000mm – some 250mm and 400mm more than the standard car. Approach and departure angles have been increased by 16 degrees and 27 degrees at 52 degrees and 54 degrees respectively, while the breakover angle has increased by 1 degree at 22 degrees.
What is it like?

A blast, at least in the wide-open space of a Dubai desert where the G63 AMG 6x6 has sufficient room to strut its stuff. I'm not sure how it would fare during the morning rush hour, but there’s no doubt you'd be noticed. And really, that's what this new Mercedes-Benz is all about.

That said, the example we drove was terrifically engineered – as complete from a technical standpoint as you'd expect any model from the German car maker whose first 6x6 customer deliveries are planned to get underway in just six months' time.

Before we got behind the wheel, we were taken for a wild ride over the dunes by a Mercedes test driver, who performed a round of donuts to prove how well engineered the G63 AMG 6x6 really is. The fact that it was originally conceived for military use helps, of course. The big surprise is just how refined it is.

Once you’ve heaved yourself on to the substantial step plate and introduced your backside to the leather-lined comfort of the G63 AMG 6x6's heavily contoured sport seat, you discover a cabin changed little from the standard G63 AMG up front.

The upright driving position is old school, as is the steeply angled windscreen and shallow dashboard. But forward vision is brilliant and indicators mounted on the front fenders act as positioning points. Rear vision is hampered by the tall rear seatbacks and a small two-piece sliding rear window.

At 3120mm, there's a 300mm increase in wheelbase to the first of the rear axles. It provides a longer cabin than the standard G63 AMG – and with it additional rear legroom. There's a liberal covering of Alcantara throughout and the standard three-across rear bench seat is replaced by two individual AMG sport seats. They get electronic backrest adjustment and are divided by a rear centre console.

There's an engaging blare through the four sidepipes as you hit the starter button to fire the engine, lending the big Mercedes an eager demeanour. Blip the throttle and it squats on its springs under load change like a true muscle car.

Once underway, the G63 AMG 6x6 proves remarkably easy to drive. It may have been conceived for the rough-and-tumble of army duties in the Australian outback, but the work put in to converting it for civilian use has produced a straightforward nature together with level of comfort you'd hardly credit from such an extreme-looking machine.

In the dunes of the Dubai desert, the G63 AMG 6x6 feels invincible. Those big tyres work with the complex driveline to provide plenty of traction, allowing you to wind it up to regular motorway speeds on narrow sandy tracks without any great trepidation.

It cruises with great authority, providing longitudinal stability – far better than the regular G63 AMG owing to the longer wheelbase and added traction provided by the third axle. There's far less vertical movement through the suspension than the standard car, resulting in a surprisingly smooth ride. There's plenty of lean in corners, but body movements are controlled thanks to a unique spring and damper package developed specifically for the G63 AMG 6x6.

Despite its weight, it accelerates with great vigour. Heady torque combines with the traction-enhancing qualities brought by the six-wheel-drive system to deliver impressive off-the-line and in-gear qualities. Mercedes won't quote official acceleration claims just yet, but insiders suggest 0-62mph in less than six seconds. Top speed, limited by its balloon-like tyres, will likely be electronically governed to 100mph.

And consumption? Again, Mercedes is yet to publish official figures, but we're told to expect around 15mpg on the European test cycle. It's just as well that the G63 AMG 6x6 will come with two fuel tanks with an overall capacity of 159 litres.

The prototype's vague, hydraulically-operated steering, which is geared at a lazy 3.4 turns lock-to-lock, indicates the need for some fine-tuning to better suit the big tyres. But any doubts about dynamic ability on the back of its rugged good looks were quickly dispelled.

Even when confronted with steep dunes and daunting sink holes, the hulking SUV managed to take it all in its stride, powering on with determination and a baritone exhaust note. Excellent wheel articulation and myriad diff lock combinations keep all six wheels firmly planted on the ground for impressive progress. An onboard compressor with four 20-litre tanks fitted along the sides of the underbody allow you to adjust tyre pressures, taking just 20sec to increase from a stand-friendly 0.5bar up to the 1.8bar required for on-road use – much faster than a conventional system that typically takes around 10mins.

The only thing I've driven that comes remotely close to the feeling I got while at the wheel of the G63 AMG 6x6 is the Hummer H1. But while the former is incredibly nimble for something so vast and hugely powerful, the latter was stodgy and rather lethargic.
Should I buy one?

You could argue long and hard about the merits or otherwise of the G63 AMG 6x6 – surely the world's first road legal MUV (monster utility vehicle). However, one thing holds true: it is a fun thing to drive in the right conditions.

But with a price tag more than three times that of the G63 AMG, it is going to be a super-exclusive proposition for all but the mega-rich.

Right now, Mercedes is looking at an annual run of between 20 and 30 cars. But if the interest it stirred during our time with it in Dubai was any indication, that's not going to be enough. Not if the Dubai royal family gets its way...

[DJM83]

Now that's awesome.

[Stefan]

Quoted from the article

It cruises with great authority

No ****

[GTP-RPD]

Ah Ze Germans whats old is new again.....Kind of reminds me of an old WW2 Nazi desert troop carrier...where does the 25mm cannon go?.......lol

[Peuty]

Crazy Germans.

I love it.

[EF ECTIV]

love it... how boss would you feel cruising about in that...

[Mechan1k]

Would make Hummer owners feel inadequate.

[EATHSV]

Would be awesome until you had to park it or fill it with juice.

[Cheese3]

Its built in Austria . . . So its not German :-P Haha

[Psi-Pop]

So much want! 3x Diff locks, that's awesome

[UberKnee]

Damn Merc make some mental cars.

[csv8]

Originally Posted by UberKnee

Damn Merc make some mental cars.

Seen Ford's RAPTOR !!!!!

http://www.mb-military-vehicles.com/en/armoured.html

This is Mercs amoured range !!!!

[Ben73]

Ill add it to my list of cars I will own one day.

[Yellow_Festiva]

Originally Posted by EATHSV

Would be awesome until you had to park it or fill it with juice.

Petrol in Dubai is dirt cheap, that is the least of their worries.

Done a few dune bashing trips in Dubai, their weapon of choice 99% of the time is a fully decked out landcruiser with a cage that looks almost factory fitted. May look into getting into one of these next time I'm there. Would be awesome.

Edit, can anyone shed light on the 100% incline indicated?

[Scott]

Originally Posted by Yellow_Festiva

Edit, can anyone shed light on the 100% incline indicated?

My guess is 100% of 45deg.

Looks awesome, can't wait to see one in the burnout comp at the Nats.

[Wretched]

Video of it
http://youtu.be/u4lFP3XV70Q

[MDS69]

Originally Posted by EATHSV

Would be awesome until you had to park it or fill it with juice.

Parking is no issue. Park it where ever you damn well want.
I read another article where the Australian army might be getting them but with a V6 diesel. Hope they are more reliable than when the G wagon did a reliability test in the Aussie outback about 12 months ago and had to get parts dropped from a plane because they kept breaking down.

[Rev28K]

Baller. Wonder what it's tow capacity is?

[Drizz06]

Originally Posted by MDS69

Parking is no issue. Park it where ever you damn well want.
I read another article where the Australian army might be getting them but with a V6 diesel. Hope they are more reliable than when the G wagon did a reliability test in the Aussie outback about 12 months ago and had to get parts dropped from a plane because they kept breaking down.

We are getting the 6x6 drive version to replace our 6x6 land rover variants.
The purpose of 6x6 is for axle weight carrying capacity and not extreme off road.

Also if you knew what army vehicles go through you'd understand just how tough the G-wagon is and also the land rovers its replacing.

[Kryton]

Portal axles.
'Nuff said.

[Orangejuicepony]

Can't wait to see one of these on Top Gear

Top Gear US had the 'regular' G63 on a couple of weeks back, ran it through a military training ground while the US Rangers tracked and chased it down. Was epic.

This would be the first thing I'd buy after winning lotto.

[DJR-351]

Originally Posted by Wretched

Video of it
http://youtu.be/u4lFP3XV70Q

Yes please.....

[broekn]

When the ADF ordered their fleet of G Wagons to replace the 110's they needed a 6x6 variant. Plenty of defence forces worldwide use the G Wagon but none have ever requested a 6x6 - So Merc engineered one for them. Probably the same driveline as this AMG.

[Brazen]

Originally Posted by broekn

When the ADF ordered their fleet of G Wagons to replace the 110's they needed a 6x6 variant. Plenty of defence forces worldwide use the G Wagon but none have ever requested a 6x6 - So Merc engineered one for them. Probably the same driveline as this AMG.

Yep, the G63 AMG 6x6 brought to you by the Australian taxpayer.