Can repeatedly pressing the acceleator and releasing it in PUNCHY manner affect the ECU on a 2012 plug-in? A family member who drives like that is going to visit shortly. It messed up the mpg in the 2007 prius we had.

Call and ask - theres quite a few recalls out for various hybrids so it might be something unrelated to driving methods

Go see todd at Tampa hybrids he can fix it and sometimes he even have plug in hybrids for sale.

I'm only a customer. And Plug ins are not sold on the East Coast. Contact Toyota Motor Corp. US.