“In truth, the 991 Turbo also has virtual gears. But that car’s so specialized that no one really cared. Until now. Here’s how it works. Let’s say that for purposes of fuel economy, it would be better if a gear between second and third were engaged. For instance, your velocity is such that you don’t need all the power generated in second gear, but third gear would lower the engine revs too much. But that gear doesn’t exist! Not so fast. Thanks to the magic of Porsche Doppelkupplungsgetriebe (PDK), the new 911 has a near infinite number of virtual gears. There’s no easy way to explain how it works, so just read the following: “This function is achieved by partially engaging two adjacent gears simultaneously while slipping both clutches slightly to achieve an effective gear ratio in between them.” See? Simple! And helps to make the 991/2 14 percent more efficient than the 991.”

Letting the clutches slip in the name of efficiency sounds like a terrible idea...

Illustration for article titled Porsche Virtual Gears

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