Mercedes-Benz AMG GT vs Ferrari 812

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.

Clearly, this is not a car for everyone, and you’d have to question whether it’s a car for anyone, really, but people who like spending $610,000 on Ferraris, and waiting in a queue to do so, will be delighted, because it delivers the kind of exclusivity, and bragging rights, that you’d have to hope a car called Superfast would.

Personally, it’s a little too much, a little too over the top and definitely too mad, but if rockets are your thing, you won’t be disappointed.

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.

It’s very… big, isn’t it? And it looks even bigger in the flesh with a bonnet you could use to put a roof over your tennis court. In all, the Superfast is 4.6m long, almost 2.0m wide and weighs 1.5 tonnes, so it certainly has presence.

Making something this big look good is a challenge even for those as talented as Ferrari’s design team, but they have nailed it. The front has what appears to be a mouth, poised to swallow lesser cars whole like some whale shark Terminator. 

The bonnet appears to be flaring its nostrils, and looks fabulous from the driver’s seat, and the swooping side and taut rear complete things nicely.

Personally, it still just looks too big to be a Ferrari, but then this is not a mid-engined super car, it’s a grand touring rocket ship, and the ultimate expression of unnecessary excess, and it pulls off that aura perfectly.

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.

Practicality isn’t really your concern when you buy a two-seat mega car like this, so let’s just say it’s about as practical as you would expect it to be. Not very, then.

Is it possible that any car - save one made from gold, dusted with diamonds and stuffed with truffles - would represent good value at a price of $610,000? It seems unlikely, but then people who can spend that much assay value differently, and would probably say that something as profound as the 812 Superfast is worth buying at any price.

Another way to look at it is price-per-litre, which is less than $100,000, considering you do get 6.5 litres of V12 Ferrari donk. Or you could go by kilowatt, which works out at nearly $1000 each for your 588kW.

Other than that you do get a lot of leather, a high-quality interior, superior exterior styling, badge-snob value that’s hard to put a price on and vast swathes of F1-derived technology. And a free car cover.

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.

I did want to give the epic, enormous 6.5-litre naturally aspirated V12 engine a perfect 10 here, but when I paused to think about it I had to admit that it is, quite possibly, a little too powerful.

Yes, it is amazing to think Ferrari can build a car that has 588kW (800 horsepower - hence the 812 nomenclature; 800 horses and 12 cylinders) and doesn’t just dig itself a hole in the road as soon as you put your foot down.

And yes, it does provide the kind of performance that makes all other cars seems a bit piss poor and pathetic, even the really good ones. 

But honestly, who could ever use it all, or need it all? They might seem like irrelevant questions, I guess, because it’s all about conspicuous over-excess, a car like this, so really the question is, would anyone want to live with 588kW and 718Nm of torque, or is it just too scary in reality?

Well, a little bit, yes, but Ferrari’s engineers have been wise enough not to actually give you all of that power, all the time. Torque is limited in the first three gears, and maximum mental power is actually only available, in theory, at 8500rpm in seventh gear, at which point you’d be approaching its top speed of 340km/h.

The fact that you can rev an engine this big, and this lusciously loud, all the way to 8500rpm is, however, a joy that would never tire.

In more practical terms, you can run 0-100km/h in 2.9 seconds (although cheaper, less crazy cars can do that, too) or 200km/h in 7.9 (which is a tiny bit slower than the far lighter McLaren 720S).

What you can’t do, of course, is achieve any of those numbers on winter tyres, or roads with snow on them.

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.

Much as you can’t have a good volcano without some serious lava, you can’t have 800 horsepower without burning a lot of dead dinosaur goo. The Superfast has a claimed fuel-economy figure of 14.9L/100km, but on our drive the screen just said "Ha!" and we burned through a whole tank of fuel in less than 300km. 
Theoretical emissions are 340g/km of CO2.

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.

Insane. It’s a word that people often lift from their lexicon when describing a supercar experience, because clearly, as forms of transport, things like Ferraris and Lamborghinis are not sane options.

But the Superfast really deserves the word, because it feels not only the opposite of sane, but truly bonkers. As if someone built it for a dare, realised it was a bad and possibly dangerous idea, and then put it on sale anyway.

Picture some tiny-handed child with his greasy, post-cheeseburger fingers poised over a big red button on his desk that could wipe out humanity, and that’s basically the situation your right leg finds itself in when driving the Superfast.

There is so much power on tap here - even the limited amount of it that the engineers allow you to access in lower gears - that it truly seems possible you’ll have a Road Runner moment, and simply dig a hole in the ground, if you push the throttle too hard.

Yes, on the one hand, the noises this extreme V12 makes above 5000rpm are memorable and moving, like Satan himself singing Nessun Dorma in a shower of sparks. At one stage we found a long tunnel, perhaps the only dry road within 500km that day, and my colleague forgot all about his licence and let rip.

The numbers on my 'Passenger Screen' spun like poker-machine wheels, then turned red and then implausible. I was shoved back into my seat as if by Thor himself, and I squealed like a small pig, but my co-driver heard nothing over the Monaco tunnel during F1 sound.

Even on dry road, of course, the winter tyres we were forced (by law) to run in the foul snowy conditions could not maintain grip, and we constantly felt the rear skipping sideways. Fortunately we were in Italy, so people simply cheered us on.

The likelihood that you will lose traction in this car is so high that the boffins have included a special feature in its new 'Electronic Power Steering' system called 'Ferrari Power Oversteer'. When you inevitably start going sideways, the steering wheel will apply subtle torque to your hands, 'suggesting' the best way to get the car back in a straight line.

A proud engineer told me that this is basically like having a Ferrari test driver in the car with you, telling you what to do, and that they used their skills to calibrate the system. You can override it, of course, but it sounds scarily like an autonomous-driving precursor to me.

What’s disappointing about this car having EPS at all, rather than a traditional hydraulic system, is that it just doesn’t feel muscular enough for a hairy-handed monster of a car like this.

It is accurate and precise and pointy, of course, and makes driving the Superfast, even in stupidly slippery conditions, almost easy. Almost.

It’s actually surprising how hard you can push a car like this along a windy and wet mountain road without careering off into a muddy field.

More time, and more traction, would have been appreciated, but you can tell it’s the sort of car you’d grow into, and perhaps even feel in control of, after a decade or so together.

So it’s good, yes, and very fast, obviously, but I can’t get past the idea that it’s all a bit unnecessary, and that a 488 GTB is simply, in every single way, a better car.

But as a statement, or a collector’s item, the Ferrari 812 Superfast certainly is one for the history books.

It might not surprise you to hear that, unlike every other company’s press kits, the Ferrari ones don’t generally include a section on 'safety'. Perhaps because driving something this powerful is inherently unsafe, or possibly because they believe their 'E-Diff 3', 'SCM -E' (magnetorheological suspension control with dual-coil system), 'F1-Traction Control', ESC and so forth will keep you on the road no matter what. 

If you do fly off, you’ll have four airbags, and a nose as big as a house forming a crumple zone, to protect you.

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.

Once you’ve paid the vast cost of entry, it’s nice to know you will get some stuff for free, like your first seven years of servicing, including all parts and labour, carried out by trained Ferrari technicians, who even dress like pit crew. It’s called 'Genuine Maintenance', and is genuinely Kia-challenging in its scope.