As its name implies, this four-door is based on the same platform as the Mercedes-AMG GT, which is sports car in the same vein as the Porsche 911. That means that this a hard-nosed rocket ship that is dialed in more for performance than comfort. If you want a comfort-focused 4-door coupe (we really hate that term), Mercedes will gladly sell you a CLS.
At the heart of the AMG GT are one of two engines, including an all-new turbocharged 3.0-liter inline-6 that generates 429 horsepower. This engine, which is found in the AMG GT 53, is supported by what Mercedes calls a hybrid-electric "EQ Boost", which provides an additional 21 horsepower and 184 lb-ft of torque.
Mercedes says that the AMG GT 53 is capable of accelerating from zero to 60 mph in just 4.4 seconds and will reach a top speed of 174 mph.
If you need a bit more performance, there is the AMG GT 63, which is powered by a twin-turbocharged 4.0-liter V8 engine. This motor delivers 577 horsepower and a 553 lb-ft of torque, allowing the vehicle to hit 60 mph in just 3.3 seconds and reach a top speed 193 mph.
However, it doesn't stop there; at the top of the totem pole is the AMG GT 63 S, with tunes that same V8 engine to a monstrous 630hp and an astounding 627 lb-ft of torque. Acceleration and top speed figures don't change much at 3.1 seconds (0-60) and 195 mph respectively, but at least you'll have bragging rights.
In all models, power is sent to all four wheels (4MATIC+) using an AMG SPEEDSHIFT 9-speed transmission. In addition, the V8-equipped models are available with active rear-wheel steering for improved handling prowess.
"Up to a speed of 62 mph, the rear wheels point in the opposite direction to the front wheels via two electric actuator motors. As a result, the car turns into corners with significantly higher agility," writes Mercedes.
"At speeds higher than 62 mph, the system turns the rear wheels in the same direction as the front wheels, which noticeably improves driving stability. At the same time, the lateral force on the rear wheels builds up considerably faster on changes of direction, thus improving the response to the steering."
If you're familiar with the AMG GT 2-Door, then you'll recognize the overall profile of the 4-door variant. To our eyes, however, it looks like a mixture of both the AMG GT 2-Door and the all-new CLS. In fact, some might even have trouble distinguishing between the AMG GT 4-Door and the CLS at first glance. On the inside, the interior combines the upper dash design of the E-Class family with the center console design of the current AMG GT 2-Door. It doesn't exactly scream "performance", but it looks like a nice place to spend your daily commute.
Although pricing hasn't been unveiled at this time, the Mercedes-AMG GT 4-Door Coupe will be on sales starting in early 2019.