Mercedes-Benz G63 vs RAM 1500

What's the difference?

The Mercedes-AMG G 63 isn't for shrinking violets. It's bold, fast, and loud, and in second-generation form massively improved dynamically and technically. It's a lot of money, but there's a lot to love, and here's hoping it stays around for decades to come.

As with all current-generation Ram 1500s, the Rebel remains one of our favourite full-sized American utes on the Australian market.

Yes, it is not cheap, and a few items standard on the Laramie Sport have been deleted for better or worse, but the Rebel offers better off-road capability without losing any of the regular 1500’s driver enjoyment, comfort, refinement and overall class.

An upsized Ranger Wildtrak with more civility than its redneck reputation suggests.

The original (W460) G-Glass, then known as the G-Wagen (or Geländewagen for cross-country vehicle), was launched in 1979 as an ultra-capable off-roader, soon favoured by armies the world over. Arriving here in 1982, its distinctive, slab-sided form remained unchanged over the best part of four decades.

At close to 4.8m nose-to-tail, more than 1.8m across, and a bit over 1.9m tall, the G 63 is now longer (+110mm), wider (+106mm), and fractionally lower overall (-13mm), but still pulls off a convincing impersonation of a bread box.

Merc-AMG confidently quotes a drag coefficient (Cd) of 0.55 for the G 63, which isn't as bad as a brick (around 2.0… I Googled it) although it is in the same league as a heavy truck.

But it's the car's unique, upright stance, complete with pumped wheelarches and old-school flat glass, that sets it apart and draws people in. Looking more like a take-no-prisoners, functional device than a luxury cruiser, I can assure you it attracts as many admiring looks and comments as a low-flying supercar wedge.

The new-gen G 63 features AMG's vertically slatted 'Panamericana' grille, and our test example was fitted with the optional 'Night Package' ($5900) adding a range of dark exterior details including tinted indicator lenses, dark tinted glass, black exterior mirror shells and spare wheel ring, other black trim pieces and painted areas, as well as 22-inch AMG forged alloy rims.

Also worth noting, Merc has retained the G-Class's solid metal door handles, complete with the mechanism's unmistakable 'click-clack' opening and closing sound. Nice touch.

Inside, the biggest change is the upgrade from a conventional dual-gauge instrument cluster and central media stack to a pair of 12.3-inch digital screens, forming a sleek widescreen display, and bringing the G 63 in line with other recent Merc offerings.

Similarly, the gearshift moves from a traditional console-mounted set-up to Merc's 'Direct Select' lever on the steering column (exactly where the indicator stalk is located in 90 per cent of right-hand drive cars).  And the standard flat-bottom, leather-trimmed 'AMG Performance' steering wheel is a racy addition.

Like the exterior door handles, another tip of the hat to the car's heritage is retention of the horizontal grab handle ahead of the front passenger on the dash above the glove box. Nice to have something to hold on to if the going gets rough.

Essentially, the 1500 Rebel is a Laramie Sport with a few changes to make it look a little more athletic.

Changes include an extra power bulge in the bonnet, a restyled grille treatment, black powder-coated steel bumpers, daytime running spot lights, 18-inch rather than 20-inch off-road alloy wheels and the aforementioned one-inch (26mm-ish) suspension lift – partly as a result of the knobblier tyres, Bilstein off-road dampers and revised springs, all for better clearances.

Speaking of which, that’s why the retractable side steps have been deleted. The approach/departure/breakover angles are rated at 20.9, 22.2 and 19.2 degrees respectively.

That the Rebel loses the RamBox does mean a bit more tub width, but at the cost of 210 litres of hidden storage.

What’s left are mostly visual changes, including a two-tone colour scheme with black paint on the lower sections, extra blacked-out trim, Rebel badges and decals and three grade-specific hues: 'Bright White', 'Flame Red' and 'Hydro Blue'.

Dimensionally, the 1500 is definitely in the next-league up compared to a Ranger or HiLux, with length at 5916mm, width at 2057mm (excluding mirrors – that balloons out to 2747mm with them) and height at 2006mm. Wheelbase is set at 3672mm. Which does wonders for interior space.

Inside, a red and black look pervades, resulting in Rebel upholstery and material applications, but the seats and dash remain pure Laramie Sport – and that’s no bad thing, as the DT series remains the most car-like and refined interior of all the big US utes.

Let’s dive in.

The G-Class has never been a particularly squeezy proposition for passengers or cargo, but an extra 40mm in the wheelbase adds even more breathing space.

Getting in is the first step, and it's a big one. At 183cm tall, in an athletic mood, I could grab the A-pillar and swing up into the driver's seat in one vaguely respectable movement.

But, those side steps aren't just for show, and at the end of a long day provide a handy staging camp between terra firma and the lofty pilot's chair.

Once on-board there's plenty of room up front, with adequate storage including a bin between the seats (now with a double door opening rather than a single hinged lid), a modest glove box, oddments space and two cupholders in the centre console, and bins with space for bottles in the doors.

There's a 12-volt power outlet in the front, second row and cargo area, while there are two USB ports in the centre console bin and a charging USB port in the second row.

In the back I could have donned a dusty Akubra and still had headroom to spare, with generous foot room, and a substantial gap between my knees and the driver's seat (set to my position).

A fold-down armrest incorporates a pair of cupholders (as well as a through-port to the cargo space for long items) and there are map pockets on the front seat backs as well as space for bottles in the doors. Two adjustable air vents in the rear of the front centre console, and another pair in the B-pillars also provide climate-controlled air to those in the rear.

With the rear seats upright boot volume is quoted at 454 litres (VDA); enough to easily swallow our three-piece hard suitcase set (35, 68 and 105 litres) or the CarsGuide pram, or a largest-suitcase-and-pram combo.

There are tie-down shackles in each corner of the floor, usefully bright lighting, a netted storage area on the passenger side (containing five fluorescent emergency vests), and folding the 60/40 split rear seat liberates even more space.

Unfortunately, gaining access to that load space is fraught with compromise. First, the single-piece rear door hinges vertically and opens from right to left. No problem when you've nosed into a shopping centre space, but not so great when you're parking nose-to-tail on the left-hand side of the road.

That means you typically have a small space between you and the car behind to get the door open, and when it is at 90 degrees, you're blocked from unloading things onto the footpath until you've shut the door.

As well as that, the door has a full-size spare (alloy) wheel and tyre attached to it. Good because a full-size spare is welcome, and bad because it makes the already bulky door even heavier.

Those keen on towing things will be pleased to hear the G 63 is rated to haul up to 3.5 tonnes of braked trailer and 750kg unbraked.

This is as much an interior review as anything else, because the Walkinshaw Automotive Group’s engineers have created nearly 50 unique dashboard parts in the 1500’s transition from LHD to RHD.

These join the hundreds of other items that have been modified throughout the big ute.

Haul yourself up and inside, and what you’re met with is essentially a Laramie Sport, but with a more-athletic vibe due to the red-and-black Rebel trim upholstery. In this evaluation example, the presentation, fit and finishes were exemplary.

Everything seems to be in Cinemascope. The sheer girth of the cabin; the excellent vision afforded by lofty seating as well as the deep windscreen and side windows; the abundance of light showering in from the dual-pane sunroof; wide yet cosy front seats that ensconce you like a bear hug – are there comfier ones out there in the world of utes? We doubt it; and heaps of space for your head, shoulders, arms and legs.

Most people should be able to sleep crossways on the back seat floor.

Back up front, the vast multi-layered dash is conventionally designed, with a 12-inch instrument display ahead of the driver and a long, portrait-oriented 14.4-inch touchscreen (containing a superb premium audio system).

But, unusually, there’s also a 10.25-inch multimedia screen for the front passenger, which isn’t visible to the driver for road-safety reasons.

Drilling into the details, there’s a satisfying attention to design to the instrument dials that you’d expect from an Italian brand – Ram owner Stellantis is partly consisted of Alfa Romeo, Fiat and Lancia, after all, as well as Citroen and Peugeot.

It’s also in the feel and quality of the presentation, as well as the general ergonomics, where most of the controls and switchgear are within reach, readily understood and easily operable – after a few moments taken to learn what’s what.

Confidence and swagger, without being too brash or ostentatious. An F-150, in contrast, seems cheap and hard inside.

Weirdly, given all the room around you, there’s also a sense of being a bit hemmed-in, thanks to the ultra-wide centre console. It houses an attic’s worth of storage capability, and is nicely integrated within the overall dash architecture.

It’s a pity, then, that Ram doesn’t offer a three-person bench seat up front – or, at least, a two-person love seat for the passengers right beside the driver’s bucket. There’s certainly enough space for that.

A half-day with the Rebel failed to showcase too many faults or irritations. There’s too much wind noise coming in at speed due to those elephantine exterior mirrors, there’s no digital radio and not everybody will like the red trim inserts. In this regard the vibe is more garish Germanic than restrained Italianate.

Remember, too, the Laramie Sport’s sliding centre console and reclining rear backrests aren’t fitted to the Rebel.

Not that you’d necessarily miss the latter, since the bench is nicely angled and seems comfortable enough. Obviously, there are acres of space to move and lounge about in, and pretty much all the usual amenities are present.

These include USB ports of both varieties, heated outboard seats, face-level ventilation, cupholders, map pockets overhead lighting, a coat hook, and the glorious sunroof that allows so much light to flood in.

There’s extra storage beneath the cushions as well as in the door panels, while a small portion of the back glass slides open. Apparently, that’s handy for hearing and giving instructions when working with the ute. Clever.

And, of course, so is the massive tub out back, complete with a full-sized spare wheel.

For now, Australia only receives the five-foot/seven-inch – or 1.7m long – tub, rather than the longer 6' 1" option offered in earlier 1500s. The Rebel’s payload jumps 30kg, and still maintains its 4.5-tonne towing capacity.

Note that, with the deletion of the RamBox cargo storage units, load-area width increases, but only by 15mm, and you lose 210 litres of hidden tub storage.

For the record, the tub dimensions are around 1700mm (length), 1295mm (width) and 543mm (height). The upshot is about 1500 litres of cargo capacity.

And, of course, there’s the maximum braked towing capacity of 4500kg (with a 70mm ball), 750kg unbraked, 7771kg for Gross Combined Mass (GCM), 3505kg for Gross Vehicle Mass (GVM) and an 893kg payload maximum.

Finally, a heavy-duty tow bar, 12-pin wiring harness and trailer brake controller are standard equipment.

This isn’t a replacement for the bombastic Ram 1500 TRX, which has sadly disappeared along with the classic Hemi V8 (though it may come back sometime in the future), but rather an adjunct to the base Laramie Sport. Just with more off-road sportiness.

Like all 1500s, as well as the conceptually-similar Silverado 1500, Ford F-150 and Toyota Tundra big utes, the Rebel is fully-assembled in the United States in left-hand-drive form, then shipped to and remanufactured in Melbourne for right-hand-drive.

This is no small task, with the Ram boasting hundreds of new and/or modified parts, needing over 80 man-hours of labour in the process.

Hence the high prices – with the Rebel matching the Laramie Sport at $141,950 (all prices before on-road costs).

More than just a sticker pack, the Australian Rebel includes one-inch higher-riding suspension, Bilstein off-road shocks, 32-inch all-terrain Falken Wildpeak 275/65R18 tyres, an electronically locking rear differential, underbody skid plates, a higher payload, special off-road cruise control and a so-called 'Power Bulge' bonnet – though there’s no extra performance under there, sadly, over the Laramie Sport’s existing SST (for Straight Six Twin-turbo).

You’ll need the $159,950 Limited flagship with its High Output SST engine tune for that.

Like the Laramie Sport, the Rebel seems almost sumptuously equipped, and includes goodies like a separate 10.25-inch multimedia display for the front passenger as well as a 14.4-inch central touchscreen and a 12.0-inch electronic instrumentation, 19-speaker Harman Kardon audio, dual-pane sunroof, heated seats front and rear, dual wireless phone charging, a sliding back window, power adjustable pedals and a fully-powered tailgate.

These come on top of a spray-in bed liner, cargo tie-down slider rails, LED headlights, wireless Apple CarPlay/Android Auto connectivity, a reversing camera and front and rear parking sensors. Handy in a truck this long.

There’s also a decent wad of advanced driver assist systems too, like autonomous emergency braking and adaptive cruise control. More on those in the safety section later on.

But it also loses some interior items too, like a sliding centre console, a reclining rear bench and 'RamBox' cargo storage, while digital radio is not available at all… which – to paraphrase '80s punk-rocker Billy Idol – might have Rebel owners yell out for more, more, more!

Anyway, there are also a few things missing outside too that are otherwise standard in the Laramie Sport.

The G 63's 4.0-litre (M177) all-alloy V8 is closed deck design using direct-injection and a pair of twin-scroll turbos to produce 430kW at 6000rpm and no less than 850Nm from 2500-3500rpm. That's 10kW/90Nm more than the 5.5-litre twin-turbo V8 it replaces!

To improve throttle response and optimise efficiency, the turbos are located inside the engine's 'V', improving air flow and shortening the distance from the exhaust side to the turbos, and in turn, from the turbos to the inlet side.

And the housings on the twin-scroll turbos are divided into two parallel flow channels connecting with separate ducts in the exhaust manifold, allowing fine management of the exhaust gas coming in and pressure going out. Result is more torque and even better response times.

Drive goes to all four wheels via a new 'AMG Speedshift' nine-speed, dual-clutch auto (replacing the previous seven-speed auto transmission) with paddle shifters and a multiple downshift function which will go to the lowest ratio possible as you keep squeezing the shift paddle.

The 'AMG Performance 4Matic' all wheel drive system is front/rear biased 40/60 (50/50 in the previous model), although if you want to head off-highway the G 63 still features three 100 per cent diff locks and low-range off-road gear reduction.

Underneath the power bulge bonnet is a 3.0-litre twin-turbo in-line six-cylinder petrol engine known as the 'Hurricane'.

Sharing just five per cent of its parts with Jeep’s version, the Rebel uses the Standard Output (SO) tune, meaning this Euro 5-rated direct-injection unit delivers a heady 313kW of power at 5200rpm and 635Nm of torque at 3500rpm.

The High Output (HO) in the Limited, on the other hand, ups the ante with 403kW and 707Nm.

Compared to the old 291kW/556Nm 5.7L Hemi V8, the Hurricane SO lacks its evocative exhaust burble and effortless low-down grunt, but the figures don’t fib: 7.6 per cent more power and 14.2 per cent more torque.

Tipping the scales at 2615kg, the Rebel returns an impressive 120kW/tonne (versus 109kW/tonne for the V8), resulting in a 0-100km/h sprint-time of just 6.0 seconds, according to Ram (HO: 5.3s). That the Hurricane weighs nearly 60kg less than the Hemi helps.

Torque is sent to either the rear wheels in 2WD mode or all four wheels in 4WD mode via an eight-speed torque-converter auto, that Ram evocatively calls ‘TorqueFlite’ – memories of old Aussie Chrysler Valiants here.

A full-time on-demand transfer case is fitted, offering '2WD High', '4WD Auto' and '4WD High/Low' along with a locking rear differential.

As with all 1500s, there are wishbones up front and the rear axle is a coil-sprung rather than leaf-spring set-up.

Claimed fuel economy for the combined (ADR 81/02 - urban, extra-urban) cycle is 13.1L/100km, with the 4.0-litre, twin-turbo V8 emitting 299g/km of CO2 in the process.

Despite the fact cylinder management tech means the engine will run on four cylinders under light load, and start-stop (with 'glide mode') is standard, we managed 16.7L/100km (measured at the bowser) over a mix of city, suburban and freeway running. To be expected for such a big bus, especially one that constantly tempts you into squeezing the throttle just to hear the exhaust bellow.

Minimum fuel requirement is 98 RON premium unleaded, and you'll need 100 litres of it to fill the tank.

Ram says the Rebel returns a combined average of 10.7L/100km, which translates to about 283 grams/km of carbon dioxide emissions. That’s a small improvement over the Hemi V8’s 12.2L/100km and 325g/km figures, aided by stop/start tech. But stirring performance, rather than outright economy are the priorities here, according to Ram.

Brimming the big 98-litre fuel tank with 91 RON standard unleaded petrol should see a theoretical average range between refills of 916km.

Let's cut to the chase. The G 63's pure grunt overpowers its challenging aero profile to thrust this boom box on wheels from 0-100km/h in a claimed 4.5 seconds. And believe it or not, despite its greater length and width, it has enough power to punch a 240km/h hole in the air (maximum velocity is limited to 220km/h if you choose not to opt for the 'AMG Driver's Package').

The new electronic architecture brings with it the latest version of Merc's 'Dynamic Select' system with five driving modes adjusting the engine, transmission, suspension, steering and assistance systems right up to maximum attack Sport+ mode.

All 850Nm of peak torque is available between 2500-3500rpm and pinning the throttle anywhere in that band feels like lining up a runway and preparing to rotate for take-off.

The two-stage exhaust flap arrangement allows you to turn the noise up from growl to roar even at modest around town speeds, and the nine-speed transmission is sharp and positive, with the multiple downshift function (in manual mode) hilariously good fun.

The racy AMG sports seats are as grippy as they are comfortable, and the fat 295/40 Goodyear Eagle F1 rubber, wrapped around the optional 22-inch forged alloys, does a good job of keeping all that mass and momentum in control as the high riding G 63 careens around corners.

And speaking of mass, the job of hauling it from warp speed to rest sits with big ventilated discs all around (cross-drilled 400mm front/370mm rear), clamped by monster six piston calipers at the front and single piston at the back. They're progressive and reassuringly powerful.

So, the performance is as dramatic as ever, but when I think of previous Merc-AMG G-Class offerings, two main shortcomings come to mind... steering and ride.

The steering was like a laggy mouse, with a few beats separating input at the wheel from response at the front treads. And the damping came up short, with a bouncy ride par for the course.

Still sitting on a ladder-type frame, the new G's suspension was developed by Mercedes-Benz and Mercedes-AMG. And finally, it has a decent double-wishbone independent front-end, with a rigid axle at the rear and coil springs all around. Plus, a strut tower brace, Merc-AMG calls it a 'suspension bridge', now connects the front strut towers, increasing torsional rigidity.

Ride comfort, especially in the most compliant 'Ride Control' suspension setting and riding on the big 22s, is massively better. It's no limo. You'll still feel jittering over higher frequency imperfections. But it's way, way ahead of the first-gen version.

The steering system changes from a recirculating ball to rack and pinion, and is now variable ratio with electro-mechanical rather than purely hydraulic assistance. And it's also much improved. We're not talking about a Lotus Elise-style connection with the road, but the steering is clearly more predictable and responsive.

One thing that hasn't changed is an ocean liner-worthy, 13.6m turning circle. You'll need to plan ahead for U-turns and reverse parks, but enough parking cameras (including surround view) to please Cecil B DeMille are on hand to help.

It's like a whole new world with a familiar cover wrapped around a markedly improved package. But (there must be a but) visibility is still compromised by thick window and door pillars, and despite the new dash layout ergonomic efficiency is patchy, with some switches and knobs located in relatively awkward positions.

As mentioned earlier the G 63 features three 100 per cent diff locks and low-range off-road gear reduction. But forget breakover angles and wading depths. This 4x4 seeing off-road action is as likely as an Abbott 2.0 prime ministership.

Suffice it to say, this car wears the 'Schöckl' badge at the base of its B-pillar. And in case you were wondering, Schöckl is a 1445m mountain in Graz, the Austrian city where the G-Class is built (and big Arnie Schwarzenegger was born!).

In the second-gen G-Class's development, prototypes covered roughly 2000km over a five kay trail including gradients of up to 60 per cent and lateral inclines up to 40 per cent. So, despite its irrelevance, the off-highway box is ticked.

If you’re a dyed-in-the-wool Hemi V8 lover and dread the notion that a mere ‘six’ has taken its place in the Ram 1500 – and particularly in the sporty off-road Rebel we have here – then a rethink may be in order.

That’s because, in the spirit of iconic sixes of the past, including Ford Australia’s legendary Barra in the Falcon and Territory, the Ram’s Hurricane should blow any scepticism clear away.

And it’s all in the delivery.

Smooth and sophisticated, the 3.0-litre twin-turbo straight-six idles with a muted rumble at start-up, but then roars off the line with an unexpected and prolonged burst of hungry acceleration.

And the power piles on effortlessly as the revs rise, with the auto seamlessly shifting through each ratio without putting a foot wrong.

Reflecting the interior design’s overall cohesiveness, the powertrain possesses a sophistication that’s far beyond what a big American truck ought to have.

That’s in 'Normal' mode. Choosing 'Sport' ups the stakes, as it also seems to stymie the stability/traction control intervention. Throttle response is noticeably sharper and more urgent, but other than the opportunity to more-easily break traction whilst getting to licence-losing speeds slightly quicker, there seemed little sense in staying in Sport.

This is a very fast ute as it is, and also an enjoyable one to drive, with a level of nuance at odds with its excessive proportions.

Even on wet and windy back roads the Rebel feels connected and controlled at speed.

The steering is appropriately weighted, with a sufficient amount of response for the driver to push on with confidence when taking corners quickly.

Remember, this is a 2.6-tonne-plus full-sized ute on off-road-biased tyres, yet getting into a rhythm and flow with the road is easy. Yes, you feel the mass, but the 1500 also feels taut and secure. And you’re not constantly harangued by over-zealous driver-assist systems going off all the time.

The wishbone front/coil-sprung rear suspension set-up must take much of the credit here, smothering bumps and tracing the groove of the road without jolting or stepping out of line.

Comfortable and quiet, there is a sense of isolation from the outside world that, incongruously perhaps, is in league with better premium SUVs. Again, this is a big American pick-up, remember.

On a few downhill twisty bits, the driver of course feels the shift in mass, but deft handling, adequate grip (great for off-road tyres) and effective brakes mean the Rebel doesn't break a sweat, even through puddles blanketing the bitumen.

Downsides? Well, it's still a large, lumbering truck to drive and park, with an inevitably massive turning circle to make heavy work of manoeuvring this beast around. Regular car park spots are almost always too small.

There's some wind noise rustling around the large exterior mirrors. And a bit of road noise coming through over certain coarser surfaces.

Overall, though, the Rebel behaves way-better than expected – and you don’t often get a chance to say that about a ute. Rapid, refined and engaging from behind the wheel, it is the best-driving full-sized US pick-up by some margin.

What V8!

That’s on road. We also had a brief off-road stint in the Rebel at the ex-Holden proving ground at Lang Lang, and we were pretty impressed with the ability and ease demonstrated over some short but demanding rough-track sections.

We doubt – at nearly $150K – that most buyers will go bush-bashing in this, but it’s good to know the hardware is there underneath to get you through.

Neither ANCAP nor Euro NCAP have tested any full-sized American utes at this stage.

However, the Ram DT 1500 has scored a five-star result in the US National Highway Traffic Safety Administration rankings.

Keep in mind, too, that the Rebel shares the Laramie Sport and Limited’s advanced driver assist systems, ushering safety like AEB (including cyclist and pedestrian detection), 'Forward Collision Warning', rear cross-traffic alert, blind-spot monitoring, a 360-degree camera view, trailer-sway control and tyre pressure monitors.

Additionally, there are six airbags (dual front, front side and curtain), traction and stability controls and adaptive cruise control.

No speed operation data for the AEB and lane support systems are currently available.

Like all Ram DT 1500s, the Rebel includes three child-seat restraining top-tether points fitted, along with two ISOFIX latches in the rear outboard seats.

Mercedes-Benz (and by extension Mercedes-AMG) offers a three-year/unlimited km warranty with 24 hour 'Road Care' emergency roadside assistance provide for three years.

Servicing is recommended every 12 months/20,000km and a capped price servicing plan is available at Silver and Platinum levels for up to five years/100,000km.

Ram drops the ball when it comes to warranty.

That’s because, like GMSV’s Silverado range, it only offers a three-year, 100,000km warranty with roadside assistance, which falls short of the rival Ford F-150 and Toyota Tundra’s five-year/unlimited kilometre coverage.

In an era where Chinese rivals are rolling out utes with seven-year schemes, Ram's (and GMSV's) warranty is severely lacking.

Service intervals are at every 12 months or 12,000km, and there is currently no capped-price servicing on offer.