Hey man the hybrid system was basically integrated to pass noise and emission tests of EU. And they have used that actually help the car not hinder it. Genius. I heard the total hybrid system only weighs 25kg as for fuel economy I don’t think it will do that much though.
I bought my first Porsche in 1978. I have owned a dozen of their vehicles. One of three currently in my garage has a hybrid power train. Best hybrid. Worst Porsche.
Sorry. No flex intended. The first one was a used $2,000.00 914. The Hybrid is a Cayenne. I just love their products but am no fan of electrification. Oh, and I'm old.