Mercedes-Benz AMG GT vs Nissan GT-R

What's the difference?

The GT63 4Matic+ is a breathtaking example of everything that Mercedes-Benz and AMG are.

Ferociously fast, incredibly agile and superbly sophisticated, it should be on anybody’s shortlist, if that also includes a Porsche, Aston Martin, Maserati or even a Lamborghini. And it’s definitely much more than yesterday’s SLC ever was – for similar money in today’s terms, as it turns out.

But, around Tasmania’s glorious roads at least, the Mercedes-AMG lacks the ride comfort and road noise isolation to be a fully-rounded-out GT, and that’s a disappointment for a brand with such formidable history in making such cars.

The GT-R of the famous R32 era was a direct response to immortals like the Audi Ur Quattro and Porsche 959 that preceded it in the 1980s.

But the Nissan’s true gift since then is that it has evolved over successive generations, to serve as a glimpse of what these long-discontinued European supercars might be like if they, too, were allowed ongoing development, rather than dropped.

As such, the last R35 GT-R as we know it in Australia is far from disadvantaged, even 15 years on from launch, because it was devised and developed outside of the usual constraints and compromises of mere mass production sports cars.

In 2022, then, the Nissan GT-R remains timeless and transcendental. It’s still an incredibly moving and thrilling driving experience… if you can get hold of one.

This is still clearly a Mercedes AMG GT coupe, like the 2014 C190 original, but a ground-up redesign sees it subtly yet significantly altered.

Some 270kg heavier than before, the larger-in-every-dimension body combines aluminium, steel, magnesium and fibre composite materials for improved rigidity and a lower centre of gravity. Length (4729mm) and wheelbase (2700mm) have been stretched by 177mm and 70mm respectively. Width (1984mm) and height (1352mm) are also up.

The nose treatment is similar to before, especially with the bulgy bonnet and signature vertical slatted grille fitted. These, combined with the LED digital headlight shape effect, is reminiscent of, but far-better executed than, the goofy-looking MG5’s face.

Underneath, it's an all-new platform shared with the SL, with the rear transaxle of the old car replaced by a permanent AWD system, leading from 46:54 front/rear weight distribution to 50:50 as a result.

That aggressive, exaggerated cab-backward/ultra-long bonnet silhouette that visually connected it with the SLS gives way to more-conventional and practical coupe proportions that is striking if not especially original, since they do look quite 911-esque. Along with the longer wheelbase and wider tracks, the result allows for two small rear seats to be fitted, while liftback cargo access remains.

Similarly, in the name of way-more usable interior packaging, Mercedes-AMG says it pushed the driving position nearly 180mm forward compared to the previous GT. Let’s see what that all looks like inside.

At its 2007 unveiling, R35’s design chief, Shiro Nakamura, revealed to your author that the GT-R had to express modern Japanese culture, singling out the giant robots of the Gundam genre.

It also had to look “mechanical”, something highlighted by the squareness and creases. He also mentioned something about “…withstanding fashion trends throughout its lifetime while evolving with the times”, calling out Porsche’s 911 as inspiration. Clearly the circular tail-lights connect with the Skyline originals of the 1960s.

Some 15 years later, mission accomplished.

Six years in the making and with the design locked in during 2004, the GT-R was nevertheless a global project, overseen by Mr Nakamura but with input from Nissan’s US (mainly the rear quarter view) and UK outposts (roofline). The latter remain as striking as ever.

Despite its blocky visage, the R35 boasts an impressive drag coefficient of 0.26 Cd, aided by particular airflow elements and helping it achieve a 320km/h top speed. While the GT-R’s body consists of steel, aluminium and carbon-fibre to contain kerb weight to a very reasonable 1751kg, the latter also partly makes up the platform, further assisting aero.

Hands down, this is the coolest supercar in the world. 

The first impression inside is that of space, despite the falling roofline and coupe-like upsweep of the side windows and you look back. While, again, similar to a 911s, a kink at the door gives the GT a unique character.

Even larger people will appreciate the generous amounts of room up front, with space to stretch, sat in sumptuously comfy bucket seats. Note that the standard ones are better than the racier but firmer Sports versions.

The driving position is perfect, ahead of a dashboard that is very typical modern Mercedes in appearance and layout.

To that end, the tablet-style integrated touchscreen (11.9 inches) is clear, fast and intuitive once time is taken to learn it. And points are also won for the multi-configurable electronic instrumentation, that allows for a variety of screens, including track, classic and minimalist views.

The trademark turbine air vents, the quite beautiful material and trim finishes and just the general solid feel are further typical contemporary Mercedes cabin treatments, as are the excellent ventilation and ample storage options.

And while rear vision isn't great, that's what cameras are for. It's all pretty much on brand.

It is a shame, given how elevated the Mercedes-AMG engineering is underneath, that the GT’s interior look and ambience is so similar to those of a (albeit higher-spec) C-Class or GLE. It's simply not as special as some of the company’s previous sports cars.

More annoyingly, the ride is too firm and bumpy for a GT, and this has the unhappy effect of provoking random rattly trim sounds within the cabin. It’s a bit like scrunched-up cellophane. In a $420K (as tested) Merc, that’s very disappointing, especially as it can be heard over the copious amount of road and tyre noise droning through, particularly on coarser bitumen surfaces.

Further back, the rear seat is strictly two-plus-two, and nobody over 150cm tall is recommended to travel there by Mercedes itself. That sloping roofline is the culprit. That said, brief trips with a bowed head are possible, as the fixed cushions and split-folding backrests are actually surprisingly comfy. But only for short journeys. Kids should love it though, and the second row does open up the GT’s usefulness enormously.

As does a near-doubling of the AMG’s cargo capacity, jumping 146 litres to 321L with backrests erect, to a whopping 675L (+325L) in two-seater mode. The flat floor is accessed via a large electrically-operated liftback door, offering quite a large aperture for easy loading/unloading.

Having no spare wheel helps here, with a tyre inflation kit included in lieu of that.

Meanwhile, at the front, under the bonnet, things have definitely changed for the better as well.

“We could have made the cabin much tighter, like a sports car, but we didn’t, because even though it is one of the fastest cars in the world, at the same time we wanted to make enough space to drive every day.”

Those are Mr Nakamura’s words from 2007 again, highlighting how user-friendly the GT-R’s cabin was designed to be.

Ample, sedan-like space is available up front, so people can get in and not feel cramped or hemmed in at all. This is in keeping with the old three-box Skyline philosophy. Australians can see it in the 1973 Datsun 240K, a distant cousin of the GT-R.

Back to 2022, with its fascia angled slightly to the right and the binnacle moving vertically with the steering column, the Nissan's whole focus is on driver welfare, and so making it a better sports car in the process. Storage is excellent, as is ventilation, while vision out is enhanced by the upright windscreen pillars and acutely rectangular side window shapes that offer their own brutalist ambience.

Just a few years ago, the equally squarish dash would have seemed laughably dated – and some of the details still are – but the physical switchgear feels fresh again after an endless wave of newer models with touchscreens and sub-menus that require fiddly prodding, when a button does the job better. That they’re weighty and mechanical in their operation adds to the GT-R’s mystique.

Being a T-spec, swathes of suede-like material also bring real class to the interior, along with the green-on-green colour scheme, chunky gear lever, thick-rimmed three-spoke wheel, hefty paddle shifters and exacting build quality. Actual 3D dials are lovely to behold as well.

Racy, tombstone-style electrically-actuated front seats, too, rise to the occasion, enveloping their occupants with an inviting sumptuousness that brings both comfort and support for hours on end. They also feature a clever curled knob that deftly takes care of reclining and fore-aft duties in one. Does any other car offer such an item?

Several seasons ago, Nissan overhauled the centre console, cleaning up the intimidatingly complicated switches and simplifying the various, customisable digital readouts that provide deeply intricate accounts of engine, driving, performance and vehicle operation data via arcade-game-like analogue-look dials. It’s really over-the-top techy and yet also mid-2000s cool, and that should thrill the curious teenager in us all. The fact that Polyphony Digital of Gran Turismo video-game fame helped develop all this just makes the R35 all the more cooler.

However, the Nissan parts-bin digital graphics, especially in the multimedia system, betray the GT-R's advancing years, as they’re so obviously steeped firmly in another era. They convey info efficiently, but they’re out of place in such as an exciting, hedonistic machine.

Plus, in keeping with a car that was released the same year the original Apple iPhone was, there’s no adaptive cruise control, digital radio and wireless smartphone charger, let alone Apple CarPlay/Android Auto of any description. But you’ll find Bluetooth connectivity as well as active noise cancellation tech at work in there, along with an 11-speaker audio system of outstanding sound quality, a USB port and... even a plug for your iPod.

Moving out to the rear, there are two seats bisected by a centre console that runs the length of the cabin, providing a natural armrest as well as a drink holder and home for a pair of Bose speakers.

The cushions are comfy enough, as are the well-angled backrests, and an average-sized person like your 178cm tester can rest back there for short periods in relative civility as long as they don’t sit too upright to avoid scalps touching the rear window.

Finally, further back, there’s a pleasingly long, deep and wide boot area, offering 315 litres of richly carpeted cargo capacity. A high loading lip and odd shape limit the amount of luggage you can put inside, however, while there’s no in-cabin access like a ski-port or folding backrests. It’s a separate compartment.   

But, like the rest of the Nissan’s cabin, the GT-R remains appealingly practical for a supercar. As Mr Nakamura said, “…you can use it for daily life, anywhere and anytime.”

To bring you up to date, the current GT-R has had to be discontinued in Australia because it fails to meet a recent Australian Design Rules stipulation that requires older-model new vehicles to be side-impact crash tested.

Don’t fret though, because a redesigned version of the current model is expected sometime in 2024, meaning that the next-generation model – probably dubbed R36 – will continue with an albeit revised version of the brilliant 3.8-litre twin-turbo V6.

More of the same, then. And we’re not complaining.

For Japan’s only mass-production supercar, conventional value-for-money parameters never applied to the R35 GT-R. From $193,800 (all prices are before on-road costs), the 419kW/632Nm, 2.7 seconds to 100km/h and 320km/h entry-level Premium significantly undercuts and outruns esteemed competition like the Porsche 911 Carrera (from $241,200) and Mercedes-AMG GT (from $294,077).

Likewise, if you were canny enough to nab one of the 28 examples of the T-spec imported to Australia (out of only 100 globally) from $256,700, then congratulations; you might double your money selling it right now. Rivals with similar performance include the Aston Martin Vantage from $299,462, BMW M850i xDrive from $285,900, Jaguar F-Type 5.0L V8 R P575 AWD from $270,265 and Porsche 911 Turbo from $404,900.

The T-spec fills the gap between the $199,800 Premium Luxury and 441kW/652Nm Nismo from $378,000; the latter ushers in substantial body, chassis, engine, suspension and braking modifications gleaned from GT3 racing experience, that helps shave 0.2s while boosting V-max by 10km/h. Along with the 911 Turbo, this puts the Nissan in league with the Lamborghini Huracan, BMW M8, Aston Martin DB11, Mercedes-AMG GT R, Ferrari Portofino, Maserati MC20 and McLaren 570S. And that’s before considering the even-lighter SV flagship.

Value, then, is relative.

Soaring resale potential aside, whether the T-spec brings nearly $70,000 worth of enhancement to the GT-R experience is debatable. And nowadays, academic.

As in all grades, you’ll find active torque transfer AWD, adaptive dampers, composite ceramic brakes, selectable driving modes, limited slip differential, gearshift paddles, dual-zone climate control, cruise control, an 8.0-inch multimedia touchscreen with satellite navigation, 11-speaker Bose sound system, keyless entry/push-button start, auto LED headlights, rain-sensing wipers, heated/electric mirrors, Brembo brakes, 20-inch Rays wheels wrapped in Dunlop SP Sport Maxx tyres, a carbon-fibre engine brace, titanium exhaust system, heated and powered front seats and semi-aniline leather applied to the upholstery, steering wheel, gear shifter, dashboard and door trims.

The T-Spec meanwhile, scores Brembo carbon ceramic rotors measuring in at 410mm (up 20mm) and 390mm (up 10mm) front and rear respectively, gold-painted 20-inch alloys and a carbon-fibre spoiler, while a dark green hue, quilt-stitched Alcantara roof lining, suede A-pillar trim and special kick plate finishers complete the interior changes. It also brings back two historic colours from the early-2000s R34 – Midnight Purple and Millennium Jade.

Also redolent of the first decade of the millennium are a distinct lack of modern active and driver-assist safety systems, so you won’t autonomous emergency braking (AEB), lane support systems, blind-spot monitoring or adaptive cruise control. Instead, your lot is limited to six airbags, anti-lock brakes with electronic brake-force distribution and brake assist, stability and traction controls, active cornering headlights, a hill holder, front and rear parking sensors, a reverse camera, tyre-pressure monitors and 20-inch runflat tyres. The latter means no spare wheel is fitted.

Progress does not wait for anybody or anything – even a Japanese supercar from 2007.

There’s a plaque signifying which engineer “handcrafted” the GT’s engine – in this case, the famous M177 in 3982cc, 4.0-litre twin-turbo intercooled V8 petrol guise.

Delivering 430kW of power at 6500rpm and 800Nm of torque from 2500-4500rpm, it sends drive to all four wheels via a nine-speed multi-clutch transmission (dubbed MCT in AMG-speak), catapulting the GT63 4Matic+ from 0-100km/h in just 3.2 seconds, on the way to a top speed of 315km/h.

How does it do that?

With AWD, the GT is now nearly 15 per cent heavier than before, but it still manages a punchy 218kW/tonne. Active aerodynamics over, inside and under a more-rigid body structure also helps.

The AMG 4Matic+ AWD system goes from 50/50 front/rear, to 100 per cent rear, variable torque distribution according to conditions and settings, and backed up by an electronic limited-slip differential. Among the many driving settings are Race Start, Drift Mode and good-old Comfort, if it all becomes too much.

Also keeping all that performance in check is a high-performance composite brake setup with improved cooling for faster responses.

Interlinked active roll bars improve body control, the five-link independent suspension features adaptive dampers for a softer ride.

And, as for that 4WS tech, the rear wheels steer opposite to the fronts at up to 100km/h (by some 2.5 degrees) for tighter and tidier handling, or 0.7 degrees in the same direction above 100, for greater stability and road-holding.

Its effect on the way this near-two-tonne coupe zigs and zags around corners is something you need to experience to really appreciate.

Does it get better than this?

The GT-R’s VR38DETT is already steeped deeply in motoring folklore. it really is one for the ages.

But just in case, here are the salient facts. It's a handmade 3799cc 3.8-litre 90-degree V6, with intercooled twin turbochargers, double overhead cams and variable valve timing, pumping out an incredible 419kW of power at 6800rpm and 632Nm of torque from 3300-5800rpm.

Tipping the scales at an entirely admirable 1751kg (kerb), the GT-R boasts a power-to-weight ratio of 239kW per tonne, helping it scream to 100km/h in 2.7s, on the way to a top speed of 320km/h. There’s a launch control system to help the latter out.

Drive is delivered to all four wheels via a six-speed dual-clutch transmission with a trio of modes depending on the level of performance desired, courtesy of Nissan’s traction and yaw-based ATTESSA AWD system. This features an electro-magnetic clutch and 1.5-way mechanical LSD to shuffle between 50 and 100 percent of torque rearwards. Suspension is double wishbones up front and a multi-link out the back.

Weight distribution to 53/47 front-to-rear.

Actually, the GT’s economy isn’t horrendous considering how fast it can go.

Even blasting a few times around beckoning country roads, we managed an indicated 13.0L/100km, which is an improvement on what Mercedes-AMG says the GT averages the 14.6L/100km average that Mercedes-AMG officially states.

That translates to a carbon dioxide emissions rating of 334g/km.

Using 98 RON premium unleaded petrol, an average of just under 480km between refills of the 70L tank is possible. The urban run sees consumption rocket to 21.8L/100km (for just 321km of range), or 10.4 out on the highway run, meaning that over 670km is possible should you decide to drive in a docile manner.

Given the Euro 5 emissions-rated GT-R’s prodigious performance, a 15.3 litres per 100km result in a mix of urban, freeway and performance driving is actually not too bad. Again, it's all relative.

Nissan’s claims are 12.0L/100km (and 17.2L/100km and 9.0L/100km for the urban and extra-urban runs respectively), for a carbon dioxide emissions average of 281 grams/km.

A sizeable 74 litres of 98 RON premium unleaded petrol is what the recommended tipple is, allowing over 615km between refills.

Nobody will drive the GT63 4Matic+ and think, ‘Oh, this is OK’, because its breadth of performance is phenomenal.

No matter which mode you're in, from Comfort through to track-tuned Race, the Mercedes-AMG blends forceful pace and commanding control without ever breaking a sweat.

Flex your right foot and the two-tonne coupe bounds into action like a giant on a mission, striding past posted speed limit signs in nanoseconds and way, way faster than the law will stand if diligence isn’t exercised.

And there’s no point relying on seat-of-your-pants sensations, either, because the chassis below embraces the road with an almost zealous devotion. Which is astounding, given how agile the four-wheel steering-enhanced handling is.

The 63’s super power is exactly that – it dulls your sense of speed. One tester admitted to exceeding 150km/h before noticing. An odd confession considering the sonic boombox that is the bi-turbo V8’s howl.

But jailbait performance is not even the 63’s most lingering joy. That would be its steering perfection, that delivers that rare trifecta of keenness, crispness and communication. The wheel feels eager and alive in your hands, even when powering between tight turns, backed up by sensational grip and control. How can a two-tonne GT handle so sharply?

Warm, dry roads were the order of the day, so we can’t tell you how the 4Matic+ permanent AWD system deals with wet or slippery surfaces, but the slick multi-clutch transmission, seamless torque-vectoring tech and sticky tyres more than cope with the 63’s formidable outputs.

So, that's the gushing part out the way, then.

Despite the adaptive dampers, rigid architecture and exquisitely sophisticated suspension, the ride is simply too stiff in Comfort mode, and downright jittery on some of the Tasmanian roads we tested on, for the 63 to be considered a true luxury grand tourer. It just isn't comfortable, luxurious or supple enough.

Plus, grippy as they are, the 21-inch wheels transmit too much road and tyre noise through to the cabin, meaning that the GT isn't as quiet as you'd hope. Add the aforementioned trim squeaks, and the expected cocooned silence isn’t always there.

The upshot is that the 63 possesses more of a sports car character than a luxury GT character. Great news if you're a 911 type buyer and are seeking a high-performance 2+2 alternative, but a disappointment if comfort and refinement are priorities.

Still, it is impossible not to be deeply moved by this Mercedes-AMG.

Nothing you've driven before is like the experience of familiarising yourself with a GT-R, going from initial intimidation to trust and cooperation. This is a supercar for all moods and seasons.

Above all, though, and even without the launch control activated that helps it get to 100km/h from zero in 2.7 seconds (making it still one of the fastest production cars in the world), the Nissan is ferociously fast.

That’s no shock at all, but what is further imprints on you the GT-R’s outstandingly broad capabilities, since it can pussyfoot about in Comfort mode like any reasonably well-sorted grand-touring sports sedan, like a tame lion. In such circumstances, the car's mechanical congeniality is testimony to the sheer scale of engineering talent going on behind the scenes.

Choose Sport or Race modes, and the forces that the 3.8-litre twin-turbo V6 unleash are nothing short of seismic, swelling up and subsuming you in a tidal wave of relentless thrust that just doesn’t let up. With the exhaust wailing and the scenery blurring by, it is starkly clear that the GT-R is a supercar of tremendous speed.

Over the years, Nissan has improved the dual-clutch transmissions operation, reducing the driveline's abrupt clunkiness that marred earlier versions, for a smoother and yet still bolt-action rifle-rapid shifter that serves to facilitate all that walloping performance. In the sportier modes, with the configurable dampers, torque split and traction settings unshackled, a ham-fisted driver can still illicit a thump from the gearbox as it clumsily engages the ratios required, but overall, it’s a far-more seamless mover and shaker than before.

As you’d expect, the steering walks a fine line between agility and heft, responding calmly yet quickly, for direct and decisive handling. The GT-R feels hunkered down at all times, and it seems to dig in even more as you turn up the wick, unfazed by turns or the state of the road below.

What’s impressive is just how deceptively fast this is, since the car glides along so effortlessly. Yes, there is the engine's alluring aural soundtrack to remind you of the vast speed you potentially might be doing, but the chassis’ incredible control numbs your sense of speed.

While the suspension is set up for firmness, the adaptive dampers help calm the ride, bringing a sophisticated suppleness over most urban terrain. There isn’t much ground clearance at 107mm, but the double wishbones and multi-link arrangement does a terrific job filtering out the bad stuff. Furthermore, backed up by fiercely instantaneous brakes, the Nissan never feels nervous nor unsettled.

Sure, it’s far from quiet, with a decent amount of road noise droning through over some types of country roads, but it’s rarely challenging or distracting. The large turning circle is one of the few faults, in an otherwise satisfying driving and dynamic experience.

It's important to note that, though the styling has hardly changed over the years, the GT-R has evolved and developed for the better over time. For a supercar, its range stretches from benign to ballistic and from mellow to unmerciful, with towering confidence and control.

There are 28 very lucky drivers in Australia right now, wondering whether the replacement will also display Miss Congeniality and Conan the Barbarian with such charming authority. Drive a GT-R to realise how close to greatness it remains to this day.

There is no Euro NCAP or ANCAP crash-test rating for the Nissan GT-R.

Standard safety features include six airbags (a driver’s knee airbag, dual frontal, side chest and head-protecting airbags for the first and second row), rear view camera, parking sensors, anti-lock brakes with electronic brake-force distribution and brake assist, stability control, traction control, tyre-pressure monitors, LED headlights with active cornering and light sensitivity and rain-sensing wipers.

Given the GT-R’s age, you shouldn't expect nor find AEB, forward collision warning, front- or rear cross traffic alert, lane departure warning, lane keep assist, blind spot monitor or any other modern driver-assist tech. This Nissan is from when Silverchair's Straight Lines topped the charts.

There are, however, two ISOFIX points as well as two top tethers for straps in the rear seat area.

What’s the GT like to own?

Mercedes-Benz offers a five-year/unlimited km warranty, with five years of roadside assistance. This is average for most mainstream and luxury brands, but superior to most sports-car makers like Porsche and Lamborghini.

Intervals are every 12 months or 20,000km, and while no capped-priced servicing is offered on the GT, pre-paid three-, four- or five-year service plans are available, ranging from $5165, $7700 and $8665 respectively.

Big performance demands big maintenance bills, it seems.

The warranty period is for five-years/100,000 kilometres, with service intervals fixed at every six months or 10,000km – whichever occurs first. There is also five years of roadside assistance.

Unlike all other Nissans officially imported in Australia, there is no capped-price servicing for GT-R. And it requires specially trained service technicians so contact Nissan to find out which dealers can carry out the task.