Because dealers aren't stupid: Manual cars are very, very hard to sell these days.Perhaps more of the manual drivers are enthusiast oriented and would have order anyways.
Just puzzles me why the dealers don't order more manuals if they keep on having no stock available while PDKs are sitting here in California lots.
Think about this: Two years ago, four percent of all vehicles sold in the U.S. were manuals. Today, that number has likely dropped to below three percent.
Let's assume that on a sports car like the 718, the manual 'take rate' is 20 percent. Why would you order a buttload of manuals for your lot that will be five times as difficult to sell as a PDK car? Taken further: With allocations so precious, why would you waste more than one or two a year on a car that will be five times as hard to sell as a PDK car?
From a dealer's perspective, stocking manual cars makes little sense. In 2018, if you really want a manual, order it. At least Porsche allows for this -- some never did before killing manuals entirely. (I'm looking at you, Audi.)