Mercedes-AMG has kicked off assembly of the the new 4-Door Coupe, the third sports car developed in-house by AMG after the SLS and GT.

Slotting in the lineup alongside its two-door brothers as the replacement of the old CLS 63, it’s being assembled in Building 36 at the Sindelfingen plant in Germany.

“With the Mercedes-AMG GT 4-Door Coupe, Sindelfingen is totally living up to its role as the competence center for upper-segment and luxury-class vehicles”, said Chairman of the Works Council at the facility, Ergun Lumali. “With our company agreement ‘Future 2020+’, we once again contributed to the safeguarding of employment at our site. And this new model is going to play its part in this regard.”

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The Mercedes-AMG GT 4-Door Coupe has the range-topping versions of the Porsche Panamera and BMW 8-Series Gran Coupe in its sight. It’s offered in two flavors, the GT 63 4Matic+ and GT 63 S 4Matic+, with up to 639 PS (630 hp / 470 kW) and 900 Nm (664 lb-ft) of torque in the latter. Pricing starts at €150,119 ($174,955) in Germany for the standard model, and 167,017 ($194,648) for the S.

Home to more than 25,000 employees, the Sindelfingen plant is already assembling other cars from Mercedes-Benz, including the E-Class and S-Class, which will soon be joined by the electric vehicles that will be sold under the EQ brand.

Daimler plans to invest some €1.5 billion (~$1.75 billion) into the plant by 2020, modernizing it and putting on a sustainable foundation. Moreover, another €600 million (~$599 million) will be allocated for Research and Development, for a total investment of €2.1 billion (~$2.45 billion).