After the successful release of the Mercedes-AMG GT 4 Door Coupe, a more powerful version of the car is set to be revealed this year and it features Plug-In Hybrid Technology. It has been teased for quite some time now and the 73 number was used only once on a Mercedes-AMG model which was the SL 73 AMG featuring a 7.3 Litre V12 engine. It’s unlikely that Mercedes will fit that engine to the GT 73 because the V12 block was retired in the 2019 S65 AMG Final Edition. The GT 73 was spied about two days ago testing its new hybrid powertrain in the snow.

The AMG GT 4 Door Coupe is a 4 door model of the AMG GT Coupe but it is based on the E63 S AMG reason being the skeleton fits perfectly for a fast saloon model. It is powered by a 4.0 litre twin-turbocharged V8 engine producing 630 hp (470 kW) and 900 Nm of torque. The GT 73 S will use the same engine plus an electric motor and with that combination you’re looking at a power output of over 700 hp which is way more than the car it is rivalling, the Porsche Panamera Turbo S Sport Turismo E-hybrid.

All that power will be shifted on a 9-Speed AMG Speedshift Dual-Clutch Transmission coupled with the 4Matic+ All-Wheel Drive system. It is expected that it might hit 0-100 km/h in no less that 3 seconds and that puts it in a territory where only a few 4 door cars exist, like the Tesla Model S P100D. This is some ridiculous rapid acceleration but that is what we are seeing from the Panamera Sport Turismo which has employed hybrid technology. It should also be able to move on electric power alone but that won’t be much and that might be around 20 km of range.

Mercedes-AMG is implementing EQ Boost technology on most of its AMG models that are coming out now, particularly the 53 AMG models. The AMG GT 73 S will set a path for future 63 models which will use hybrid technology to boost the power output. The next C63 S AMG is rumoured to use the M139 2.0 litre engine plus an electric motor to boost power and to many fans that sounds like a disappointment. However, we will only miss out on the AMG growl but the performance will improve exceptionally. The AMG GT 73 S is set to go on sale in 2021 and might be produced in limited units or not, depending on the demand in the market.

Spy Pictures Credit: CarPix