Never has the word ‘bonkers’ been better personified. As if the Mercedes-AMG GT 63 4 Door wasn’t monstrous enough, the boffins in Affalterbach have now added even more zing to the four-door hooligan. The GT 63 4 Door S now gets an ‘E Performance’ badge and that means it gets the assist of an electric motor.

Mercedes-AMG GT 4 Door launchedThe 4.0-litre twin-turbo V8 has been carried over, but the Electric Drive Unit on the rear axle has upped the power figures significantly. The E Performance churns out a laughable 831bhp and an equally hysterical 1400Nm of torque! These numbers fit well with a Brabus badge, but on a standard AMG? Who knows what will happen once Brabus gets their hands on it?

Mercedes-AMG GT 4 Door launchedVisually, there is little that will reveal the demon that lurks beneath the bonnet. Still, it gets that wide whale-like Panamericana grille with aggressive and scooped out bumpers based on the design of the two-door AMG GT.  The outer intakes are wider and pointed towards the centre of the car thereby helping with the airflow.
However, it is from the rear that you can distinguish this lunatic from the standard car thanks to the rear bumper with integrated plug-in charging flap and the model designation highlighted in red. With the hybrid, AMG is also introducing externally fluted trapezoidal twin exhaust tailpipes that look stunning.

Mercedes-AMG GT 4 Door launchedNow, the E Performance is the flagship of the GT range and that means you get all the goodies like AMG RIDE CONTROL+ suspension with new damping system and also the adapted AMG ceramic high-performance composite brake system as standard along with the MBUX multimedia system with special hybrid displays. Unique touches like the graphics on the multimedia display that visualize the power flow of the entire drive system, rpm, output, torque and temperature of the electric motor, as well as the temperature of the battery. The rear-seat passengers receive information on the energy flow as well as the power and torque of the electric motor on their optional multimedia display.

Mercedes-AMG GT 4 Door launchedThat said, it is the engine and performance that sets the E Performance version apart. The 150kW electric motor is positioned at the rear axle, where it is integrated with an electrically shifted two-speed gearbox and the electronically controlled limited-slip rear differential in a compact electric drive unit (EDU).The lightweight high-performance battery is also located above the rear axle. Acceleration from a standstill to 100 km/h takes just 2.9 seconds, and 200 km/h is reached in less than ten seconds. And it will not stop till 316km/h.

Mercedes-AMG GT 4 Door launchedThe development of this lithium-ion battery was inspired by technologies in the Mercedes-AMG Petronas F1 team’s Formula 1 hybrid racing cars. So should you want to feel what Lewis does every weekend, the E Performance will come close. If at all the E Performance version will make it to India is yet to be seen, but if it does, it possesses a big threat to not only the Aud RS 7s, but also the Lambos and Ferraris.