The 992-generation Porsche 911 has been spied for some time now, but the German carmaker isn’t ready to reveal the latest iteration of its famous nameplate just yet. Instead, we’re being introduced to more photos of test mules and prototypes enduring torture tests during the new 911’s development process.

As Porsche explains, the testing first focuses on core aspects of the car – the engine and chassis – both of which have been improved from outgoing 991-generation cars. Next, the human-machine interface (HMI) undergoes function and stress tests, including the driver assistance and Porsche Connect systems. The latter differs from country to country, warranting even more testing to ensure they meet local market requirements.

From then on, prototypes are sent across the globe for hot-weather testing such as the Gulf States in the Middle East or Death Valley in the United States. At these places, the car’s air conditioning, thermal management, and combustion behaviour must remain functional tests in temperatures up to 50 degrees Celsius. Additionally, the interior components must also not expand and make noises when exposed to heat.

On the other end of the spectrum, the new 911 was also sent to areas with colder climates like Finland, where minus 35-degree temperatures are recorded. There, the test agenda focuses on areas such as cold start, heating and air conditioning, traction, handling and braking behaviour, as well as the response speed of the control systems related to driving dynamics.

Other parts of the world where the mules have been sent to include the winding roads of the European Arctic Circle, endurance runs across China’s roads, and race tracks with a traffic structure that is common for that country. There’s also the matter of ensuring the engine runs reliably on fuels that vary in terms of quality from country to country.

Of course, no testing is complete without a trip to the Nurburgring, where the performance capabilities of the 911 are put to the ultimate test, along with a stop at the Nardo test track in Italy. In total, the cars have driven around three million kilometres, at altitudes as low as 90 m below sea level and up to 4,300 metres on Mount Evans, Colarado (biturbo and fuel system testing).

Aside from the torture tests, Porsche also considered the customer-oriented everyday testing on public roads in cities and cross-country throughout Germany. These efforts, when put together, are integral in the carmaker’s pursuit of ensuring the eighth generation 911 continues the tradition of being the best 911 of all time.