On the test rig, its revamped 4.0-liter high-revving flat-6 ran more than 22,000 hours (around 916 days or around two and a half years) simulating typical circuit profiles including running the engine at full throttle for a “very high proportion of the time.”

With Porsche’s Motorsports division working on the project, the 911 GT3’s engine is basically the same one found in the 911 GT3 Cup racing car. Featuring individual throttle valves, large bearing crankshafts, and plasma-coated cylinder liners, it delivers 510 horsepower and 470 Nm—more power and torque than its predecessor.

Aside from the engine, the aero elements have also been honed in the wind tunnel, spending more than 160 hours of fine tuning. Among the new features include a suspended rear wing with a swan-neck mounting. All in all, Porsche says it makes 50 percent more downforce at 200 km/h.

Finally, Porsche put everything together on the racetrack where the 911 GT3 was driven flawlessly for 5,000 kilometers on the oval at Nardo in Italy at a constant speed of 300 km/h, stopping only to refuel.