A new model in the form of the Mercedes-AMG GT S Roadster has joined the already expansive AMG GT line up. The open-top GT S will sit in between the standard GT Roadster and the range-topping GT-C variant.

"With the AMG GT S Roadster, our AMG GT family has gained another exceptionally sporty member that combines high driving dynamics with an emotional open-air experience. The new model represents the perfect alternative for the performance-oriented AMG GT Roadster customer. " says Tobias Moers, Chairman of Mercedes-AMG GmbH.

Mercedes-AMG GT S ditches roof for open sky

Mirroring the GT S Coupe, the GT S Roadster is powered by a biturbo 4.0-liter V8 which is tuned to produces 515 PS and 670 Nm of torque. It is then mated to a 7-speed dual-clutch transmission, similar to other AMG GT models. In comparison, the standard GT Roadster only produces 469 PS while the hardcore GT C makes 550 PS.

Despite a 35 PS difference, the GT S Roadster has close performance figures with the GT C. The new variant does 0-97km/h in 3.7 seconds compared to the C's 3.6 seconds. Top speed is rated at 309km/h on the GT S and 315km/h on the GT C.

Mercedes-AMG GT S ditches roof for open sky

As it is a more tamed version of the GT C Roadster, the S Roadster does come fitted with some performance-oriented parts as well. An electronically-controlled rear differential coupled with 'AMG Ride Control' adaptive dampers come standard. Optional goodies include larger brakes and the AMG Dynamic Plus Package.

Visually, the GT S Roadster looks the same as its open-top siblings. One way to identify it, apart from the badging, is the shinier metal on the grill, fender fins, and diffuser trim courtesy of the AMG Chrome package which comes standard. The same can be said for the interior which is essentially carried over from the other models.

The Mercedes-AMG GT S Roadster will go on sale in the United States later this year.