The next-gen model will be AMG's first performance hybrid.
The Mercedes-AMG GT 4-Door is currently the most powerful AMG car you can buy. It comes in three engine flavors: the 53 with a 3.0-liter turbocharged mild-hybrid inline-six delivering 429 horsepower, a 63 with a 4.0-liter twin-turbo V8 outputting 577 hp, and a more potent 63 S model producing 630 hp. This is enough to make the AMG GT 4-Door one of the most powerful models in its class, just behind the 680-hp Porsche Panamera Turbo S E-Hybrid.
Most automakers would be fine with having one of the most powerful cars in a segment but AMG doesn't like to be second-best. In fact, the company is already working on a more powerful version of the GT 4-Door. Speaking to Whichcar, AMG boss Tobias Moers said, "Like everybody else in the automotive industry, we have to transform ourselves. The next generation of cars are going to be performance hybrids - the GT 4-Door is the first one."
The hybridized AG 4-Door is rumored to go by the name 'GT73' and continue to utilize AMG's 4.0-liter twin-turbo V8 boosted by twin turbochargers and either a mild-hybrid or plug-in hybrid system. Not only will the GT73 be more powerful than the Panamera, but it is also rumored to produce over 800 hp and be capable of driving on electric power alone. The 73 drivetrain is also expected to make its way into other AMG production like the S-Class, SL, and G-Class.
Along with plug-ins, Moers also mentioned how AMG will compete with fully electric vehicles. "[Porsche] Taycan sets the bar - that's for sure, Moers said before reiterating, "That car sets the bar... for now."
Moers even gave some insight into what we can expect to see from a future electric AMG car, which will live under the company's AMG EQ Performance brand. The "Single ratio is wrong," he said. "You need a minimum of two gears, otherwise we don't meet our power requirements. Even the hybrid that we're going to have next year [GT 4-Door] is a two speed."
"For all-electric cars, it's easy to have all-wheel drive, and the electric motor's torque is instant - so that's not the biggest differentiator. The biggest differentiator as of now is the driving dynamics and the interaction between driver and car that makes the difference in my perspective and our perspective," Moers added.