That enables a 0-100 kph time of 3.2 seconds and a top speed of 315 kph.
That's just the start though, as further enhancements include: an LED Intelligent Light System with Swarovski crystals and "Exclusive Edition" lettering on the center console cup holder cover, 19-inch light-alloy wheels painted in either Aragonite Silver or Himalaya Grey with Thulium Silver.
The most powerful version of AMG's four-door coupe will use the biturbo 4.0-liter V8 engine, producing in that case 630hp (639PS) and 663lb-ft (900Nm) of peak torque.
From the hardcore Mercedes-AMG GT R to the base-but-relevant Mercedes-AMG GT, the sports vehicle range might not be as wide as the 911's but in that price bracket it has something for everyone. The V-8 models gets larger 6-piston fixed caliper brakes up front, the GT 63 painted red, the 63 S done up in yellow.
Rear-seat passengers in GTs fitted with the "Business Console with Touchscreen" option get a divided rear bench with heated and cooled cupholders, wireless phone charging and their own display that can adjust climate control and media settings, and monitor the behaviour of driver and auto in real-time, including steering angles and pedal inputs.
The GT 4-door comes with 4Matic+ all-wheel drive with torque distribution, with all power sent to the wheels via a nine-speed automatic transmission.
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All AMG GT 4-door models come with excellent features such as stop/start, stability control, and more. Yes, it's the 630bhp GT 63 S 4Matic+ that sits at the top of the range. They also offer a performance ceramic brake option. It adds latches in the front bumper, wider side skirts and a modified rear bumper. That includes a Race mode.
Sales for the GT 4-Door will begin mid-2018 in Europe, but Australian availability is unconfirmed.
The sporty focus is reflected in the interior with a number of cues that we are already familiar with the two door AMG GT models that combines the latest technology with the comfort and driver orientation.
We're entering a new wave of high performance four door coupes from Germany, with the BMW M8 Gran Coupe scheduled to arrive, the Porsche Panamera doing sterling business and this, the new four-door Mercedes AMG GT, vying for the wallets of those wanting a certain style, four seats and a big lump of performance.
A range of three variants was announced, including an entry-level six-cylinder GT53 and two V8 versions, called the GT63 and GT63S.
Various optional upgrade packages are available, including a £2,395 Premium equipment line, which swaps the seven-inch touchscreen for a 10.25-inch version to create a widescreen effect more common on the German firm's high-end models. The GT 53 is due by mid-2019.