Mercedes-Benz AMG GT vs Toyota Supra

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 Toyota GR Supra GT is a superb sports car that’s relatively easy to live with in the city even with the manual gearbox and incredibly fun to drive out where the roads are free from traffic.

Not only is the GT great for the price compared to rivals but it’s the pick of the Supra range.   

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.

Perhaps it’s just me but I think the Supra looks exactly how it should look - like a Hot Wheels car.

Seriously, how good does the back view look? I love the spoiler that angles up like a crazy ski jump and the tail-lights integrated underneath it.

I love the huge rear hunches swollen like they’ve been stung by an enormous wasp. Check out the roof - see how it’s curved? And that bonnet with the vent above the wheel arches, I love the styling of every millimetre of this car.

But my neighbour doesn’t. I pulled up and said, “How good does this look?” And he gave me this stare like I was bonkers.

I don’t know, maybe you and I have the same excellent taste, but if there’s anything I hate it's anything that’s boring.

To me the BMW Z4 ‘twin’ is getting very close to the boring end in the styling department. 

Talking of BMW, the Supra's interior is very BMW from the indicators stalks to the media system and climate control set-up.

It’s a modern and minimalist cabin… if only there wasn’t a cupholder right where my elbow goes. That’s a good place to stop and talk about the Supra GT’s practicality. 

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.

The good news is that if you’re tall like me (189cm) and mainly legs then you’ll have more than enough legroom and headroom because the footwells are impossibly deep and the seats can be lowered to what feels like ground level.

Actually, you are almost at ground height in this car so the bad news if you’re as tall as me you’ll probably have to crawl out of the car on all fours.

The cabin of the Supra doesn’t do the storage space thing well. Sure there are two cupholders but their location is the same place my elbow frequents while changing gears and resting.

The wireless phone charging area is good and easy to access, but the door pockets are as thin as post box slots so if it’s letters you’re storing there you’re in luck.

If it’s anything thicker than that you’ll be left looking around for a place to put your purse or wallet and end up throwing it in the phone charger space if the passenger seat is taken.

You could always ask your co-pilot to hold onto your things which reminds me to tell you that the Supra is a two-seater only. There are no back seats, and there’s no option to have back seats.

If you’re looking for a sports car with rear seats (although space will be limited) for the same money then there’s the Audi A4 45 TFSI and at an even lower price is the Ford Mustang GT.

If you look over your left shoulder while in the driver’s seat of the Supra GT you’ll see into the boot -  there’s no wall separating the cabin from the cargo area. This is handy for throwing a school bag in as I did for my son on the morning drop off, but also means your items may make an unexpected visit to the cockpit if you stop suddenly.

The boot is large for a sports car at 296 litres (VDA) and it managed to fit our large CarsGuide suitcase with space to spare as you can see in the images.

The Toyota GR Supra GT with the manual gearbox lists for $87,380 and you’ll pay the same price for the same car with the automatic transmission. 

Yes, almost $90K might sound like a lot of money for a Toyota (unless it’s a LandCruiser) but it’s actually a bargain considering the GTS grade above costs $10K more and has the same engine plus pretty much the same features apart from a fancier stereo, head-up display and 19-inch alloys (rather than the 18s on this GT).

Also, if you didn’t know already the Supra is a BMW/Toyota joint venture model aligned with the BMW Z4, and if you want the Beemer version with the same engine as the Supra GT you’ll pay $139,800 for it.

So see, it’s a bargain in comparison.

The standard features list of the GT has pretty much everything you need. There’s a proximity key, LED headlights with adaptive high beam, active cruise control, sat nav, wireless Apple CarPlay and Android Auto, a 10-speaker stereo, wireless phone charger, heated and power adjustable seats, shifting paddles and sports pedals. 

Great features, but let down only by a small 8.8-inch screen for your media and nav. Still, that absolutely shouldn’t be a deal-breaker for you.

The rivals? Well, clearly the BMW Z4 which is way more expensive, but also there is the Nissan Z which costs between $70-$80K and is also a hoot to drive.

Add the Ford Mustang GT to your research list, as well. It’s not as agile as the Supra but it’s quick, fun and sounds better to my ears. 

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.

You’re looking at a Supra that could be the peak of its model evolution because since the generation’s arrival in 2019 Toyota has increased the power of the 3.0-litre turbo-petrol in-line six-cylinder from 250kW to 285kW (torque remains the same at 500Nm) and introduced a six-speed manual. 

This 3.0-litre six-cylinder turbo-petrol is the only engine you can have with the Supra, there are no four cylinders or V8s - now there’s an idea. 

Toyota says the 0-100km/h time for the GR Supra with the manual gearbox is 4.4 seconds and 4.1 seconds for the automatic which comes with a ‘launch control’ feature.

Of course, all Supras are rear-wheel drive.

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.

Toyota says the 3.0-litre six-cylinder straight-six turbo-petrol engine in the Supra GT paired with the six speed manual gearbox should use 8.9L/100km after a combination of open and urban roads.

I did a week’s worth of city commuting and then a couple of hundred kilometres on country roads, but no motorways and the trip computer told me I was averaging 10.3L/100km.

Not bad for a big engine in a car tuned for performance, driven by a big kid who feels like he’s playing with somebody else’s toys.  

Premium 95 RON fuel is recommended, although 'standard' 91 is acceptable. A 52-litre fuel tank translates to a theoretical range of around 580km, dropping to approximately 500km using our real-world number.

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.

Ah, but what about living daily with a manual? As a car enthusiast most of the cars I’ve owned have been manuals and I’ve rarely cursed them because I love to drive.

But there were times when they were a pain, such as in traffic, or in traffic on steep streets and in traffic in shopping centres. Did I mention in traffic, also?

But on the nice roads with bends and dips, hills and sweeping corners, hairpins and twisty parts in places without traffic, then all is forgiven. 

And so it goes with the manual version of the Supra. 

Making life easier in the Supra GT is a clutch pedal without much travel so you don’t feel as though you’re at the gym doing a one-sided leg press.

I found the shifts themselves, while short, to be less than smooth. At first, I thought that the clunky changes might have been because the gearbox hadn’t been run in yet, but the odometer was saying 7500km, so this could just be the nature of the gearbox and after a few days I became used to it.

The rev-matching feature of this gearbox is a nice touch, especially on those sporty drives when you change into a gear and you’re thrown straight back into the power band again.

Superb balance, great steering with a nose which points exactly where you want it to and that magnificently smooth turbo-petrol in-line six posting all its meaty grunt to the rear wheels just behind your shoulders makes for a sports car that’s fun, talented and quick.

Good brakes (348mm ventilated rotors with four piston calipers at the front and 330mm discs with single piston calipers at the rear) and grippy Michelin Pilot Supersport tyres (255/40 fr - 275/40 rr) complete a great package. 

A ride that’s still comfortable over bad Sydney roads and surprisingly good visibility made the Supra easy to live with in the city, from parking to school drop offs.

Yes, used it each day for the school run with my older child and the grocery shopping. 

The GR Supra GT has not been crash tested by ANCAP, but its BMW Z4 twin scored a maximum five stars when it was tested by the European equivalent Euro NCAP.

Still, the Supra has seven airbags, there’s AEB with pedestrian and cyclist detection, lane keeping assistance and blind spot warning, plus front and rear parking sensors. There are seven airbags on board.

There’s no spare wheel, but there is a tyre inflation kit which should get you out of trouble.

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.

Toyota covers the GR Supra GT with its five-year, unlimited kilometre warranty. Servicing is required every 12 months or 15,000km and is capped at $415 per service.

The warranty is the industry standard in terms of time and kilometre length, and the capped service prices are very reasonable - a lot more affordable than a car with a prestige badge on the bonnet, too.