Mercedes-Benz AMG GT vs Lotus Exige

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.

To say the Lotus Exige 350 Sport exists at the very pointy end of motoring is a sharp understatement. It is, in essence, a track car that you’re somehow allowed to drive on the road, which means it's hugely compromised in various ways as a vehicle for day-to-day use, yet it's not really fair to criticise it for those failings, because commuting was never its intended purpose.

While it would obviously shine in its natural environment of a race circuit, the fact is you could also enjoy it enormously between track days if you pointed it at a suitably smooth and winding bit of country blacktop.

The performance, handling, steering and stopping are all fantastic, in the right conditions, and you can see how someone might justify it to themselves as a far cheaper version of a ($327,100) Porsche 911 GT3. The difference being that a Porsche doesn't make you fold yourself up like a pocket knife every time you get in.

The Lotus, then, is a car for the extreme enthusiast, only. And possibly for nudists, too.

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.

The Lotus philosophy is summed by this slightly absurd mission statement: "Simplify, then add lightness". In the words of the great Barnaby Joyce "you don’t have to be Sigmund Freud" to work out that lightness is not something you can 'add', but you get the idea.

Everything about a Lotus is focused on the power-to-weight ratio, and this 350 Sport version takes the Exige to the ultimate degree, weighing in a full 51kg lighter than the S version, at just 1125kg, and with its hefty 3.5-litre supercharged V6 it is capable of lapping the company’s Hethel, UK test circuit a full 2.5 seconds faster.

Lap times, rather than road manners, are what this car is all about, and as such there are no creature comforts of any kind.

The Exige is an eye-catching beast, though, looking a bit like Darth Vader's helmet strapped to a skateboard. Everything about it is a statement of intent, and while the interior is as bare as Barnaby's brain, the gear lever, with its exposed workings and shiny silver knob, is a thing of strange beauty.

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.

Both the words 'practical' and 'space' have no place in a road test of this Lotus, so shall we just move on?

Oh, all right. There is no shoulder room to speak of and to change gears you have to fondle your passenger's leg. You're also in danger of breathing into each other’s mouths accidentally, you’re sitting that close.

Speaking of impractical, the door apertures are so small, and the whole car so low, that getting in or out is about as much fun as attempting to hide in a child's suitcase.

Cupholders? Forget it, nor is there anywhere to put your phone. There are two tiny oddment storage holes just near each well-hidden door handle, and a kind of slidey, slick shelf where a glove box might be, on which it’s not safe to leave anything.

Put things on the floor and they will slide under the super low seats and never be seen again.

The Lotus people pointed out a parcel shelf behind the seats, but I think they imagined it, and there is a tiny boot at the rear, behind the engine, which is smaller than some actual boots.

The question of 'value' is a tricky one when you’re looking at a $138,782.85 car that’s about as useful in day-to-day life as a matchbox-sized handbag. But you have to consider what people buy a Lotus for, and the answer has absolutely nothing to do with practicality.

A car like this Exige 350 Sport is purely purchased as a toy, a track-day special that you can, in theory, drive to the circuit via public roads. Franky, if I was rich enough to have one I’d still transport it there on the back of a truck.

Relatively speaking, you could have a far more practical and infinitely more comfortable Porsche Cayman for $30K less, but the Lotus is $30K cheaper than the similarly track-focused and brutal ($169,990) KTM X-Bow.

It is the opposite of comfortable.

In terms of features, you get four wheels, an engine, a steering wheel, some seats, and that’s about it. You can buy a circa 1993 removable-face two-speaker stereo, which you can't really hear over the engine and road noise, for $1199. Oh, and they do throw in air conditioning, which is also noisy.

Our slick-looking metallic black paint was also $1999, the 'full carpets' another $1099 (expensive floor mats, basically), the Alcantara trim pack $4499, cruise control (really?) $299 and the hilarious optional 'Sound Insulation' $1499 (I think they actually forgot to fit it). All up, our press car’s price climbed to $157,846, which, I have to say, is no one’s idea of good value.

On the plus side, the local Lotus people - Simply Sports Cars - do offer features a buyer would love, like regular Lotus Only Track Days, a chance to take part in the Phillip Island 6 Hour and the Targa High Country event, and various other racy experiences.

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.

In the past, Lotus engineers were satisfied with the power they got from tiny four-cylinder Toyota engines, but this Exige 350 Sport is a Very Serious Car and thus has a relatively whopping 3.5-litre, supercharged V6 shoehorned into its backside, which makes 258kW and 400Nm, and that's enough to fire this tiny machine from 0-100km/h in just 3.9 seconds, although it feels, and sounds, a lot faster.

The six-speed gearbox feels like it's been stolen from an old racing car and is an absolute joy to snick shift at speed.

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.

Lotus claims a combined fuel economy figure of 10.1L/100km. We don't believe that would be easy to achieve, because the temptation to rev the hell out of it and hear it roar would be too great, and too constant.

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.

It's rare to find a car that is such an improbable mix of furious fun and infuriating annoyance. The Lotus is rattly, noisy, hugely firm to the point of punishing, with seats that offer encouragement but not support.

It is the opposite of comfortable and so hard to see out of that driving it around town, in any sort of traffic, feels borderline dangerous. There’s also the distinct sensation that you’re so low and so little that all those people in their SUVs won't see you.

Throw in the fact that it's so painfully, stupidly difficult to get in and out of and it's definitely not the sort of car you take if you're heading to the shops. I got so sick of its hard-edged annoyances at one stage that I became too grumpy to even take people for joy rides in it. I just couldn’t be bothered with the hassle, but then an inner-city suburb with high kerbs and even higher speed humps is not the Exige's natural environment.

The gearbox is a thrill a minute, as is the engine.

Making it even more of a challenge around town, at low speeds or in parking situations is the steering, which isn't so much heavy as wilfully obtuse. Doing a three-point turn is the equivalent of 20 minutes of bench pressing your own body weight. At least.

Out on a winding bit of country road, however, the steering becomes one of the best things about the car, because its pure, unassisted weighting feels so alive in your hands. There’s a sense of actually wrestling, or finessing it around corners that makes you feel a bit Ayrton Senna.

Indeed, the whole car comes alive, and starts to make some kind of sense, once you're on a smooth, perfect piece of tarmac. It is fast, noisy, thrilling, utterly and overtly involving, stiff of chassis and firm of ride, with brakes capable of pulling you up with indecent haste. It’s also, thanks to its low centre of gravity and mid-engined layout, beautifully balanced.

The gearbox is a thrill a minute, as is the engine, particularly once you explore the upper rev ranges, at which point the scenery really does become a scary blur out the ridiculously small windscreen.

Sure, you can't see anything behind you other than the engine, but what a lovely sight that is, and nothing is going to catch you anyway.

It does feel edgy, of course, and sharp, and it’s not as easy or refined to drive as some cheaper sports cars; an MX-5 makes for a far more pleasant companion. But this is an extreme Exige, a machine built by and for genuine enthusiasts.

And, above all, for the sort of people who will take it to a race track, which is where it both looks and feels completely at home.

Unfortunately, on public roads, it would be annoying more often than it would be thrilling, but the truly hardcore Lotus aficionados would never admit such a thing.

Unsurprisingly, considering it will sell fewer than 100 cars in Australia, Lotus has not had the Exige ADR crash tested, so there's no star rating. You do get two airbags, passenger and driver, as well as ABS, 'Hydraulic Brake Assist', 'Lotus Dynamic Performance Management', driver-selectable ESP with three modes, cornering brake control and EBD.

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.

Your Lotus comes with a three-year unlimited kilometre warranty and three years of roadside assist. A service costs $295, plus parts.