Essentially the production version of the concept shown at the Swiss showpiece last year, the AMG GT4 replaces the CLS as Benz's flagship AMG tuned sedan, and aside from also serving as a rival to the Porsche Panamera, rates as a more practical version of the regular AMG GT / GT S / GT R Coupe.
Riding on the three-pointed star's MRA platform and able to seat four or five depending on the selected seat configuration, the fastback styled GT4 follows Mercedes-Benz's Sensual Purity design philosophy that debuted with the CLS, and consists of the AMG GT R Panamericana grille, multi-beam LED headlights, Jet Wing designated front apron, slim LED taillights, frameless windows and flowing shoulder line.
Inside, the GT4 takes after the CLS and S-class with the now obligatory 12.3-inch widescreen display taking centre stage, while other touches include the turbine-style air vents, AMG Performance steering wheel with touchpad-like buttons and carbon-fibre finished dashboard with ambient lighting.
New though is a redesigned transmission tunnel not only housing the equally new stubby gear lever, but also a new infotainment system control pad and eight colour display buttons around the rim for the various driving modes, gearbox, suspension, Electronic Stability System, exhaust and dampers.
Underneath its skin, and depending on the model selected, the GT4 not only gets the three mode (Comfort, Sport and Sport+) AMG power setup and Dynamic Select system with up to six modes (Slippery, Comfort, Sport, Sport+, Individual and Race), but also active rear wheel steering and even a Drift mode.
Initially, the AMG GT4 will debut in both six and eight-cylinder variants with the former being the GT 53 (white) that comes powered by the same 3.0-litre turbocharged straight-six engine as the CLS 53, backed-up by a 48-volt electric motor for a total system out of 320 kW and 520 Nm. For short bursts though, power can be hiked by 22 kW and 250 Nm using the EQ Boost starter-alternator powered by the aforementioned electric motor.
Connected to a nine-speed TCT Speedshift automatic gearbox, Mercedes-AMG claims a top speed of 285 km/h and 0-100 km/h in 4.5 seconds, with drive, as indicated by its name, going to all four wheels via the performance optimised 4Matic+ all-wheel drive system.
At the sharp end, the GT 63 employs the now widely used 4.0-litre bi-turbo V8 engine that produces 430 kW and 800 Nm or 470 kW and 900 Nm in the case of the 63 S (black). While both models come fitted with the MCT version of the nine-speed 'box, top speed is rated at 310 km/h and 315 km/h with respective 0-100 km/h sprint times of 3.4 and 3.2 seconds.
In addition, both V8 models feature Cylinder Deactivation technology with Active Engine Mounts fitted as standard on the 63 S, while a multi-chamber air suspension setup replaces the steel spring and adaptive dampers used on the 53. A further standard fitment on the 63 S is a rear-axle limited slip differential, AMG brakes with yellow six-piston fixed front calipers and 20-inch five-spoke, tantalite grey light alloy wheels.
Although featuring the same brake configuration, the standard 63's calipers are painted red while the 53's ventilated and perforated compound discs are finished in silver grey. Wheel sizes for both 10-spoke, 19-inch alloys finished in vanadium silver.
No pricing details have yet been announced.
