Mercedes-Benz AMG GT review

The second generation of the AMG GT supercar. And no longer a supercar. That arrived back in 2014 as an aggressive, long bonneted, two-seater. Now it’s a four-seat (OK, optionally) Super GT, a rival to the Aston Martin DB12 and Ferrari Roma as much as the Porsche 911 Turbo.

Very little is carried over from the first gen. The chassis architecture is all-new and shared with the SL, but Mercedes is at pains to point out this is not an SL with a fixed roof: the two cars were developed independently. That’s clear when you start driving it. The GT is far more fluent and capable; not only than the SL, but also its aggressive and edgy predecessor.

Has it followed the C63 down the hybrid path?

Originally it didn’t, the GT first arrived with the familiar 4.0-litre twin turbo V8 in two states of tune: a GT 55 with 469bhp and a GT 63 with 577bhp courtesy of higher turbo boost pressure, better airflow and modified engine software. Then came the GT 43, complete with the bonkers little 415bhp 2.0-litre turbocharged four-pot from the AMG A45 S.

However, in April 2024 Mercedes unveiled the range-topping GT 63 S E Performance that uses the same plug-in hybrid tech as the 831bhp GT 63 4dr, but here hoofing out 805bhp and 1,047lb ft of torque. That power comes courtesy of the 4.0-litre twin turbo V8, an electric motor and a 6.1kWh battery, and the 0-62mph time of 2.8 seconds makes this the fastest accelerating Mercedes ever. Yeah, it’s quicker to 62mph than an AMG One.

You can plug it in too, but you’ll only get around eight miles of all-electric range. It recoups energy remarkably quickly though, so don’t worry too much about the single digit range. 

Oh, and you can already have a slightly more track-focussed GT 63 Pro too. That gets an aero package as standard, extra cooling and a tad more power from the non-hybrid V8. That means 604bhp and 627lb ft of torque.

How much do they all cost these days?

That’s a great question, because in the UK you can currently only have the 63 or 63 S E Performance. The 63 starts at £164,905 in Premium Plus trim, while the plug-in hybrid E Performance is £180,745 in the same trim, but it also comes with carbon ceramic brakes as standard while the non-hybrid doesn’t. Almost looks like good value for over 800bhp, no?

Why has Mercedes repositioned the AMG GT?

Due to customer demand. Buyers of the old car complained that it wasn’t useable enough, that it was cramped, difficult to see out of and they wanted more space. The message was clear: ‘We’re going to buy Porsche 911s unless you give us what we want’. Only 5-10 per cent of AMG GT customers ever took their car on track, so that wasn’t a motivating factor.

So how practical is it now?

The boot is downright generous: Merc says 321 litres, but it acts bigger. And those back seats fold, increasing load space to 675 litres. It’s almost a shooting brake. The rear seats are apparently fine for people ‘up to 1.5m’ tall. Translation: pre-teen kids with all the flexibility that entails. Oh, and remember that if practicality is your number one consideration, the hybrid battery does eat into boot space.

It still looks similar to the old car, where have they found the room?

It’s actually considerably bigger. 180mm longer, and 70mm taller. It’s narrower than the last one though, due to customer feedback that they found it challenging to thread down narrow roads. They weren’t wrong about that. It’s a cleverly designed car – it doesn’t look larger than its predecessor, still has the thrusting front end, but the proportions and surfacing are good – it’s a handsome, striking car without being too overt.

It still has a relatively long bonnet, but the cabin isn’t so comedically far back now. The driver has been shunted forward by 20cm and there’s a larger glass area to improve visibility. There’s a catch to all this. The weight has gone up considerably. At 2,130kg with fluids the GT weighs a quarter of a tonne more than the car it replaces. The hybrid is 2.34 tonnes. Just let that sink in…

Does that mean it's slower?

Depends how you measure it, we suspect. On paper over the standard increments, absolutely not. The new GT is 4WD as standard, which gives it a predictable advantage from a standing start. 0-62mph takes 3.2 seconds (the Hybrid S E Performance just 2.8s, remember) – and even the fastest of the old GTs, the Black Series, could do no better than match that time. However, the mass means that for roll on performance the new car doesn’t quite have the snap and forcefulness of the fastest old GTs.

But it’s still a wonderfully charismatic powertrain, mated here to a nine-speed multi-clutch gearbox. Top speed is 196mph in the GT 63 and 199mph in the GT 63 S E Performance. 

Talk to me about tech.

AMG is using plenty of it to help overcome the weight. It needed this new GT to have a broad sweep of capability and be easy to drive fast. The old car was snatchy at times (it got better as it was developed through the course of its life – the GT R was an awesome bit of kit), but this one couldn’t be. It needed to be smooth, yet agile... tricky with the size and weight.

Four-wheel steering was a logical, proven addition, but more radically the GT has done away with anti-roll bars. Instead, it features hydraulic cross-linked dampers; the same tech McLaren fits to the 750S. Pressure through the system not only varies suspension stiffness, but can act very fast to resist roll through corners. It’s also optional on the SL, and will even be fitted to the G-Class in due course.

There’s also active aero via a five-position rear spoiler and drop-down underbody panel behind the front splitter, while the 4WD system – as in the E63 and others – can be rear-wheel drive only in Drift mode. There are six driving modes and an electronic differential on the rear axle. It’s a complex car, but to drive it’s friendly and benign, rides comfortably and quietly, yet has enough driving nous to entertain. The hybrid E Performance is even more complex.

It’s rounded and fun, though on a very bumpy UK B-road, the 63’s rear axle can manage to run out of vertical travel if you’re pressing on in one of the more committed modes. It’ll skip a little if you’re not careful. Use a slightly softer suspension setting if you live in the countryside: it’ll be ultimately faster and less airborne. We’ve only driven the E Performance on smooth German roads, but it also rides wonderfully in its softer settings.

How does it stack up against rivals?

It’s up against a talented bunch. The McLaren GTS, Ferrari Roma and Porsche 911 Turbo are all stiffer and more sporting, this feels more aligned to the Aston Martin DB12 and Maserati GranTurismo even if it doesn’t have the same cachet. However, it’s considerably more desirable (if also more costly) than the £140,000 BMW M8. Oh, and if you’re not so worried about sporting pretensions there’s the newly hybridised Bentley Continental GT in the same bracket. 

It might seem like a subtle shift of positioning, to go from a relatively hardcore sports car to a super GT – nothing more than the addition of practicality – but the GT comes across as a car more comfortable in its own skin. The old GT was always looking for a role, a purpose: now it has a clearer sense of its own identity.

It’s lost a little character and toughness in the process, but it’s well resolved and gets AMG back on track after the curiously imbalanced SL and poorly received 4cyl C63 hybrid. This is its flagship, its statement car: it keeps the roaring V8 alive a little longer and should attract more customers than the old GT. It’s lost its uniqueness, but gained a whole heap of capability and – with the 805bhp hybrid powertrain – a staggering turn of pace.