Is this a four-cylinder Porsche 991.2 test mule?

We all know that the face-lifted Porsche 991 Carrera (likely to be dubbed 991.2) is set to switch from naturally aspirated flat sixes to downsized turbocharged powerplants but we certainly weren’t expecting this!

A Porsche 991.2 prototype has been caught on video testing in a suburb of Stuttgart and, while it looks like this is just another test mule, it definitely doesn’t sound that way.

Is that the distinctive note of a flat four engine we hear coming from the back of the black prototype? In the short clip of the car in motion, it undoubtedly doesn’t sound like a derivative of the 9A1 flat six that we’ve come to know since 2008.

For comparison, here’s another brief video [above] of what seems to be a more traditional flat-six engined Porsche 991.2, albeit with the unmistakable ‘woofle’ of two turbochargers.

If you’re worried that the next generation of Porsche 911 is about to go a bit ‘356’ on us there may be some hope. The updated Porsche Boxster/Cayman is due to get a flat four engine so this Porsche 991 prototype may have been employed to test out that engine.

For all the latest and best Porsche 911 films, check out our dedicated video section.

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