It’s been over three years since we saw the reveal of the Mercedes-AMG Project One, and we’re still waiting on a final production car. Mercedes isn’t keeping us entirely in the dark on what’s going on behind closed doors, though.

Today, Mercedes has dropped a new video and new photos of the Project One testing on track. The company says that testing is entering a new phase now, as pre-production models are running hot laps on Mercedes’ proving grounds in Immendingen. Mercedes also says that this is the first time it’s testing with the engines turned up to their full power potential of “more than 1,000 horsepower.”

For us, this is simply a great chance for us to hear the 1.6-liter turbocharged V6 scream around a racetrack. Mercedes says the sound we’re hearing is authentic and what owners will hear from behind the wheel of their Projects Ones. Since this engine is a street-tamed Formula One engine, it sounds very similar to the Mercedes race cars piloted by Lewis Hamilton and Valterri Bottas on Sundays. The sound isn’t exactly the same as what we hear on TV, but there’s no mistaking this engine’s origins. 

In addition to running at full power, Mercedes says it’s working to validate and develop the active aerodynamics. After this bout of testing is complete, Mercedes says it plans to head to the north loop of the Nurburgring. Don’t expect to see a record attempt, though — AMG already ruled that out a couple years ago.

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