Neil King, a London-based analyst at Euromonitor, said the expansion of AMG beyond special versions of Mercedes models gives Daimler the ability to compete with the likes of Porsche, Maserati and Jaguar. Cars like the GT "have a halo effect on the rest of the range," he said.
AMG’s hallmark are engines that have been signed by the technician that built them by hand. The same goes for the GT, which creates a limit to the volumes the unit can produce. Still, the point of the model is to cast an aura across the lineup rather than boost sales.
AMG now offers 21 vehicles -- typically souped-up versions of production sedans like a 235,000-euro version of the S class -- compared with 17 five years ago. The offering includes compacts such as the 49,980-euro A45 hatchback.
Helped by the broader lineup, AMG sales have doubled in five years to about 32,200 vehicles in 2013, beating an annual target four years early.
AMG's Moers said the GT will be positioned below the SLS, which went out of production two months ago. He said there are no current plans for an SLS successor.
The GT will be built in Sindelfingen, Germany, where the Mercedes S-class flagship sedan is also built.
The GT is part of Mercedes' parent Daimler’s plans to launch 12 entirely new models by 2020 with the goal of passing BMW as the top-selling global luxury brand after losing the top rank in 2005. Mercedes is currently No. 3 after Audi. Daimler CEO Dieter Zetsche also aims to lift Mercedes' operating margin to 10 percent from 6.5 percent last year.
Bloomberg and Reuters contributed to this report