The relatively new Mercedes-AMG GT sports car has already spawned numerous iterations, including convertibles, the track-ready R, as well as a race-spec model, but the German brand still has big plans with the nameplate. In the rumor mill for a couple of years, the four-door version has just been confirmed by a new concept car that Mercedesconvertibles, just unveiled at the 2017 Geneva Motor Show.

While the Mercedes-AMG GT Concept name might not say much -- or it may lead you to believe it's another version of the coupe -- it is in fact not just a four-door model, but also one that uses electricity to move about.

A quick glance is enough to understand why it bears the "AMG GT" badge. The sedan is obviously based on the coupe and share many styling features with the two-door. However, the design language has been upgraded to better suit a Mercedes sedan, which has to be elegant above anything else.

Up front, both the grille and the bumper are closely related to the coupe, but the headlamps are slimmer and stretch toward the wheelarches instead of having the sweptback design seen on the regular AMG GT. The car's profile is obviously longer due to the extra two door, but the roof line is pretty sleek and resembles that of a coupe. I'd say it's somewhere between the CLS and the CLS Shooting Brake, as it doesn't leave much room for a decklid, but it's not a wagon either. Around back, both the taillights and the trunk lid are heavily based on the AMG GT, but the bumper seems more massive. Underneath, there's a carbon-fiber diffuser with a massive exhaust pipe in the middle.

All told, while it comes in a four-door sedan configuration, the concept is by no means mundane and it's comparable to the coupe in terms of aggressiveness. But unlike other concepts, it's menacing looks are backed by an impressive drivetrain and mind-blowing performance.

Bearing the new "EQ Power+" designation that Mercedes introduced with the latest Formula One car, the AMG GT Concept pairs the existing twin-turbo, 4.0-liter V-8 engine with a powerful electric motor. There's no specific information about either of them, but Mercedes says that the combo generates up to 600 kW, which converts to a whopping 804 horsepower. That's 348 horses more than the base AMG GT coupe and 227 horsepower more than the range-topping GT R. The concept is also around 130 horses more powerful than the newly launched Porsche Panamera Turbo S E-Hybrid, which speaks volumes of what Mercedes wants to achieve in this niche. More impressively, AMG expects the sedan to hit 60 mph from a standing start in less than three seconds. That's supercar-like acceleration right there!

Of course, there's more to talk about beyond the powerful drivetrain, but we'll take a closer look at the concept car in our upcoming review.

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Why it Matters

The AMG GT Concept previews Mercedes-AMG's assault on the hybrid market and if the show car makes it to production with similar features, than Porsche and Tesla have a lot to worry about. You might say that Tesla builds fully electric cars and it's like comparing oranges to apples, but AMG is also ready to jump on the EV bandwagon. At 800 horsepower, the AMG GT sedan will obliterate just about anything in its path. Heck, this thing is nearly as powerful as the Porsche 918 Spyder.