The camouflaged prototype has been pounding tarmac since October 2025, racking up laps at Bilster Berg, Portimão, Monteblanco, and Immendingen. Now Mercedes-AMG has finally revealed what the CONCEPT AMG GT TRACK SPORT was always meant to become. Not one car, but two: a next-generation GT3 race car and what Affalterbach is calling the most extreme Black Series ever built.
The road car exists to homologate the racer. That alone tells you where AMG’s priorities sit.
Michael Schiebe, who chairs Mercedes-AMG’s board, was blunt about ambition: “We are developing the most extreme Black Series ever. At the same time, we want to set the next record-breaker in motorsport with the future GT3.” The concept, he said, “was more than just a concept from the very start.” Translation: engineering came first, the public reveal was theater.
AMG’s Customer Racing lineage runs deep enough to justify the confidence. The SLS AMG GT3 opened the program in 2011. The Mercedes-AMG GT3 followed in 2016, with an Evo refresh in 2020.
Each generation has been a reliable podium machine for privateer teams across the globe. To build the successor, Mercedes-AMG created an entirely new subsidiary — Affalterbach Racing GmbH — dedicated solely to the development and construction of the next GT3. Spinning up a standalone company signals investment far beyond a typical model refresh.
Christoph Sagemüller, head of Mercedes-AMG Motorsport, confirmed testing has entered its next phase, with Nordschleife sessions now underway. “We have already gained important insights from the initial tests,” he said, adding that tracks “relevant to GT Sport” are next on the schedule. Read between those lines and you see a car being benchmarked against every circuit it will actually race on, not just validated in simulation.
The color coding is deliberate. Red for the GT3 racer, yellow-green for the Black Series road car. Two identities, one skeleton.
The Black Series badge has always carried a specific promise: race car guts stuffed into a street-legal shell. It started in 2006 with the SLK 55 AMG Black Series, a car born from versions of the SLK 55 that had been modified for an Asian racing series. The internal project name back then was, not coincidentally, “TRACK SPORT.”
AMG is reaching back twenty years to tie the mythology together, and the symmetry is clearly intentional.
Every previous Black Series — SLK, CLK, SL, C63, GT — escalated the formula. More power, less weight, fewer concessions to comfort. The new one will need to surpass the previous GT Black Series, a car that set a production-car Nordschleife record in 2020 with a flat-plane crank V8 producing 720 horsepower. Whatever sits under the new car’s hood has to beat that, or the “most extreme ever” claim is just marketing oxygen.
No powertrain details. No weight figures. No timeline for production or pricing. AMG is parceling this out carefully, and the absence of specifics at this stage means the engineering is likely still being locked down.
The GT3 regulations that the race car must conform to will dictate much of the architecture. And by extension, the architecture of the road car built to homologate it.
That relationship is the critical detail. The Black Series is not a marketing exercise bolted onto a grand tourer. It is a race car’s street-legal twin, engineered in parallel from the same platform, by a purpose-built subsidiary.
The road car serves the racer, not the other way around. Affalterbach has built its reputation on exactly this kind of ruthless clarity. Two cars, one platform, zero apologies.
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