Maybe so. I stopped being active on Priuschat years ago.LeftieBiker wrote: ↑Sun Apr 25, 2021 7:24 pmToyota knows that the Gen III Prius is a time bomb, with the ICE becoming unreliable after about 6 years - sooner if driven a lot of miles. The emission control system allows oil to build up in the oil separator, and there is no sensor to warn when the pressure threatens to blow the head gasket. They have never acknowledged it, just as they haven't acknowledged that several of their motors over the years have had issues with sludge buildup and/or high oil consumption.
Someone I know with a gen 3 (2011 model year per his Priuschat profile) and who I'm FB friends with said in Feb 2019 "First major repair on my Prius after 185k of trouble-free miles. The headgasket failed and caused coolant to leak into cyl #2." He does a ton of DIY work and seems to have a side gig or something of working on cars of all makes and models.
I'm not sure what kind of crazy driving he does but he said in late Feb 2021 (pointing to his old post): "2 years and 30K miles later (now at 215K). The head gasket repair is holding up well. Car is running great!"