4-door AMG GT to come in 3 variants

The long-teased Mercedes-AMG GT four-door will come in three variants — two with a V-8 and one with an inline-six engine — and will begin deliveries early next year in Europe, followed by the U.S. The most powerful V-8 entry will produce 639 hp.

After much speculation about the car’s name, Mercedes on Tuesday said it will be called the AMG GT 4-Door Coupe. It joins other coupes and convertibles to give the AMG GT lineup its first four-door sports car.

It debuted at the Geneva auto show.

The top-of-the-line variants are the GT 63 with a 577-hp hand-built 4.0-liter, twin-turbo V-8 and the GT 63 S with a 639-hp hand-built 4.0-liter, twin-turbo V-8.

The V-8s have cylinder deactivation to improve efficiency and reduce fuel consumption.

There also will be a version arriving for AMG’s new 53 midrange performance line. The GT 53 will be powered by a 429-hp AMG-enhanced 3.0-liter turbocharged in-line six.

It will have an electric EQ Boost feature enabled by a starter-alternator between the engine and transmission offering additional output of 21 hp.

The GT 53 also has a 48-volt electrical system.

The GT 63 and 63 S will go on sale later in 2018 in Europe, followed by the GT 53.

All variants come with all-wheel drive. Drift mode is standard on the 63 S, optional on the 63 and unavailable on the 53.

Pricing will be announced closer to the market launch.