The *average* use of the electric motor is 6 L/100km (39 mpg).
For Posches, it's 7 L/100km.
However:
"The lowest fuel consumption levels were found in the cheaper end of the PHEV market, in Kia, Toyota, Ford and Renault vehicles, which often used under one litre per 100km." That's while in electric mode.
1 L/100km = 235 mpg
While it's not zero consumption, it still beats the average monster SUV by far.
https://www.theguardian.com/environment/2026/feb/18/plug-in-hybrids-use-three-times-more-fuel-than-manufacturers-claim-analysis-finds
Math it out, friends.