Mercedes-Benz AMG GT vs Maserati Granturismo

What's the difference?

This is no Lotus, but damn if it ain't a hell of a good time, and proof positive that electrification can enhance the V8 experience, rather than ruin it.

From the most compelling engine sound this side of … well, anything … to a timeless, shapely body the GranTurismo is a surprising car. While its age is catching up to it in a few areas (fuel consumption, in-car entertainment) what matters most is that this Maserati still lights the fire in the belly.

It's a mean, but somehow still sleek, looking beast, this big AMG, but it's also immediately recognisable as a thing of intent.

Up front, there's the huge vertical-slat grille that looks like it drove straight out of a Stephen King novel, a massively domed bonnet, and these vacuum-like side intakes that look like they could suck in stray animals.

Then, at the back, there are twin dual-pipe exits (for four in total), and an automatic wing that pops out of the rear bodywork. And all of that's capped off with these massive 21-inch forged alloy wheels hiding golden ceramic-composite brakes.

Mean, yes, but not quite as aggressive as you might expect the most powerful AMG to date to come across, perhaps.

Inside, it's more subdued again, with the AMG presenting a pretty passenger-friendly space, with all the Benz tech you'd imagine, including the massive screens, and — thanks to its air suspension and drive modes — the ability to tailor the ride to your liking, meaning a comfortable and premium experience, despite the power under your right foot.

As has already been (indelicately) mentioned, this is a design that is not only ageing well, it still looks pretty fresh from most angles. The only let down are the over-sized tail-lights that look more at home on something less exotic. Those aside, it's a deeply pretty car, with lovely surfacing, the highlight being those beautiful rising guards that funnel your vision down the bonnet.

Interior packaging isn't the GT’s strong point. Inside is pretty cosy with a fat transmission tunnel that makes for a narrow footwell.

With the Sport you get carbon-backed seats that are thinner in the backrest allowing for more room in the tight rear bucket. Snug they may be, but head and leg room is surprisingly good. The white leather interior of this one may not have been to everyone’s taste, but it was certainly beautifully put together.

The boot is fairly small but will fit more than, say, the similarly sized (but double the price) Ferrari FF.

The GranTurismo MC Sport comes in two versions. Both have six-speed gearboxes, but one has the rear-mounted robotised manual while our version was the six-speed ZF automatic, which is mated directly to the engine.

The auto weighs in at $295,000, $23,000 cheaper than the Stradale. Both cars come standard with Poltrona Frau leather, carbon fibre trim inside and out, alloy pedals, bi-xenon headlights, foglights, parking sensors front and rear, 20-inch MSC alloys, keyless entry, electric seats, Alcantara headlining, cruise control, dual-zone climate control and electric adjustment for the steering wheel.

Sadly, time has marched on from when the GranTurismo's entertainment system was first presented to the world. It's a weird, unwieldy system that takes a lot of getting used to, with buttons that don't always seem to do what their label says. Pairing the phone was arduous and while most owners do that once, it does speak to the overall usability.

Having said that, the 11-speaker Bose stereo pumped out some pretty good sound and once the satnav's input method is deciphered, it worked surprisingly well given its fairly basic presentation on the seven-inch screen.

It's not just what's under the bonnet, but what's at the rear axle, too.

But let's start at the front, shall we? Here, a familiar twin-turbo V8 engine lurks, producing a potent 470kW and 900Nm, which is fed through a nine-speed automatic, complete with paddle shifters and several drive modes, including the traction-limiting 'Race'.

But that is then joined at the rear by an electric motor with its own two-speed transmission, and which produces 70kW and 320Nm – or up to 150kW for 10-second blasts under heavy acceleration.

Combine both, and you're tapping into around 620kW and in excess of 1000Nm, enabling a sprint to 100km/h in just 2.9 seconds, and a flying top speed of 316km/h.

Maserati's 4.7L V8, inherited from the then-parent Ferrari, is a cracker. Based on the V8 found in the F430, it has a gloriously silly redline of 8000rpm. Peak power is 338kW at 7000rpm and 520Nm at 4750rpm.

The 0-100km/h is dispatched in 4.8 seconds and top speed is 298km/h.

The transmission is a six-speed ZF automatic and fuel economy is a sobering 14.3L/100km on the combined cycle.

There's a lot of big numbers surrounding the Mercedes-AMG GT63S E Performance, but let me throw another one at you – 245km/h.

That was the high score I saw pop up on its digital speedo as the big and electrified Mercedes flew down the main straight at Sydney Motorsport Park (formerly Eastern Creek), before my courage ran out and my foot found the brake.

That kind of velocity is mind-bending in a vehicle this big, and so is the way that power is delivered, with the AMG's big brain deciding how and when to maximise power from the engine and electric motor to deliver a constant surge of torque that shoves you back, and the GT63S E Performance into the future.

But big acceleration is hardly surprising with that much power. What is a little more impressive is how easy this four-door supercar is to wrestle around a racetrack.

Sure, the feeling-out process is a little more involved, as you figure out how and when you'll feel the weight shifting, and as your brain struggles to compute how what's happening is even possible, but after a couple of laps the AMG settles into an easy, flowing rhythm that, while never feeling light on its feet, also doesn't feels like you're piloting a bus.

At least part of that is down to the wizardry on board, like the 'AMG Air Suspension', the rear-axle steering and the limited-slip diff, all of which combine to make the GT63S feel tighter and sharper than it would otherwise.

But it's also partly down to the prodigious power on offer – perfect corner entry and exits are less relevant when you have a cruise missile strapped to your right foot that doesn't just quickly make up for any driver errors, but shrinks the space between corners to the blink of an eye.

Yes, it's heavy, and there isn't much that's pure about the go-fast experience, but it left an ear-to-ear grin on my face, and isn't that priority one for any new AMG?

How does it drive on the road? That I don't know, as this was a track-only drive day. But we will get one on a proper test soon and let you know.

There are few more impressive sounds in the automotive world than a Maserati-tuned V8. Even on start-up, the smooth V8 gives you a little bellow to wake the neighbours and when in non-Sport mode it quickly settles into a quiet idle. The exhaust has the now-familiar valving that opens up when you switch it into Sport and if you don’t default to that when driving the GT, you're probably dead inside.

The V8 makes a tremendously addictive racket, getting better with every rev as the tacho needle swipes right to the redline.

When compared with the lightweight sportster from which the engine is lifted, you won't be moving quite as quickly, but the noise and the sharp-shifting transmission will keep you happy. Tunnels are worth the price of entry as you crank the windows down and flip the paddles to find second or even first.

It's hard to pick that the transmission is a traditional automatic. The shifts are fast and positive but never violent – that would be out of character – responding properly to the paddles. In automatic, it's smooth and gentle.

The steering is mighty impressive too. There's enough feel to keep you interested and entertained but not so much you’ll be overwhelmed in the daily drive. The nose changes direction with a flick of the wrists and the moderately-firm Skyhook suspension does a good job of making the rest of the car follow without undue body roll.

Despite rolling on 20-inch alloys shod with sticky 245s up front and 285 at the rear, cruising in the GT is surprisingly quiet and comfortable. WithSport mode off, it's a very agreeable place to be. The seats are hugely comfortable, even in the rear, which seems impossible.

The MC comes standard with six airbags, ABS, stability and traction controls, pre-tensioned and load-limited seatbelts front and rear.

There is no ANCAP safety rating for the GranTurismo.